Sin 135 degrees

There must also be an obtuse angle whose sin is 0.25. To see the second angle, we draw a congruent triangle in the second quadrant as shown. The supplement of 14.5 ° —namely, θ = 180 ° − 14.5 ° = 165.5 ° —is the obtuse angle we need. Notice that y r = 0.25 for both triangles, so sin θ = 0.25 for both angles.

Trigonometry. Trigonometry questions and answers. Without using a calculator, compute the sine and cosine of 135° by using the reference angle.What is the reference angle? degrees.In what quadrant is this angle? (answer 1, 2, 3, or 4)sin (135°)=cos (135°)= (Type sqrt (2) for 22 and sqrt (3) for 32.)Question Help:Video.Free math problem solver answers your algebra, geometry, trigonometry, calculus, and statistics homework questions with step-by-step explanations, just like a math tutor.cos -135 degrees = -√ (2)/2. The cos of -135 degrees is -√ (2)/2, the same as cos of -135 degrees in radians. To obtain -135 degrees in radian multiply -135° by π / 180° = -3/4 π. Cos -135degrees = cos (-3/4 × π). Our results of cos-135° have been rounded to five decimal places. If you want cosine -135° with higher accuracy, then ...degrees-to-radians-calculator. sin-135. en. Related Symbolab blog posts. Practice Makes Perfect. Learning math takes practice, lots of practice. Just like running, it ...

sin(1.3) Calculate the value of the sin of 1.3 ° To enter an angle in radians, enter sin (1.3RAD) sin (1.3 °) = 0.0226873335727814 Sine, in mathematics, is a trigonometric function of an angle.In trigonometry we use the functions of angles like sin, cos and tan. It turns out that angles that have the same reference angles always have the same trig function values (the sign may vary). So for example sin(45) = 0.707. The angle 135° has a reference angle of 45°, so its sin will be the same. Checking on a calculator: sin(135) = 0.707To change 3π/4 radians to degrees multiply 3π/4 by 180° / $\pi$ = 135°. Sin 3π/4 = sin 135 degrees. Our results of sin3π/4 have been rounded to five decimal places. If you want sine 3π/4 with higher accuracy, then use the calculator below; our tool displays ten decimal places.The exact value of given trigonometric ratio sin(135)° is 1/√2 . The given trigonometric ratio is,. sin(135)° Since we know that, The sine function is one of three main functions in trigonometry, along with the cosine and tan functions. The sine x, often known as the sine theta, is the ratio of the opposing side of a right triangle to its hypotenuse.. Since we also know that,Feb 25, 2023 ... Find the value of the expression sin 135 cos 135 sec 30 csc 30 2 3 3 2 3 2 3 2 3 > Receive answers to your questions.sin 135 degrees = √ (2)/2. The sin of 135 degrees is √ (2)/2, the same as sin of 135 degrees in radians. To obtain 135 degrees in radian multiply 135° by π / 180° = 3/4 π. Sin 135degrees = sin (3/4 × π). Our results of sin135° have been rounded to five decimal places. If you want sine 135° with higher accuracy, then use the ...The function spans from -1 to 1, and so do the results from our arccos calculator. The range of the angle values is usually between 0° and 180°. There are a number of arccos rules, like that cos (arccos (x)) = x, or that arccosα + arccosβ = arccos (αβ - √ ( (1-α 2 ) (1-β 2 )), as well as sine of the arccosine: sin (arccos (x)) = √ ...

Learn how to find the value of sin 135 degrees using the identity sin (A + B) = sin A cos B + cos A sin B. The answer is sin 135 degrees = 1 2.Online calculator to get the trig function values for standard degree and radian values. Listed here all the trig functions to calculate the sine, cosine, tangent, secant, cosecant and cotangent values for 135° degrees. Sine 135° Degrees. Cos 135° Degrees. Tan 135° Degrees. Sec 135° Degrees. Csc 135° Degrees. Cot 135° Degrees. Click the ...For sin 180 degrees, the angle 180° lies on the negative x-axis. Thus, sin 180° value = 0. Since the sine function is a periodic function, we can represent sin 180° as, sin 180 degrees = sin (180° + n × 360°), n ∈ Z. ⇒ sin 180° = sin 540° = sin 900°, and so on. Note: Since, sine is an odd function, the value of sin (-180°) = -sin ...Sin, cos, and tan are trigonometric ratios that relate the angles and sides of right triangles. Sin is the ratio of the opposite side to the hypotenuse, cos is the ratio of the adjacent side to the hypotenuse, and tan is the ratio of the opposite side to the adjacent side. They are often written as sin (x), cos (x), and tan (x), where x is an ...

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sin(1.3) Calculate the value of the sin of 1.3 ° To enter an angle in radians, enter sin (1.3RAD) sin (1.3 °) = 0.0226873335727814 Sine, in mathematics, is a trigonometric function of an angle.a. StartFraction 21.3 sine (34 degrees) Over sine (118 degrees) EndFraction. The measure of angle E is 55. The length of EF is 12.49. Ivan began to prove the law of sines using the diagram and equations below. sin (A) = h/b, so b sin (A) = h. sin (B) = h/a, so a sin (B) = h. Therefore, b sin (A) = a sin (B).Find the Exact Value cos(15 degrees ) Step 1. Split into two angles where the values of the six trigonometric functions are known. Step 2. Separate negation. Step 3. Apply the difference of angles identity. Step 4. The exact value of is . Step 5. The exact value of is . Step 6. The exact value of is . Step 7. The exact value of is .Sin 120 degrees = - Sin 60 degrees = [tex]$-\frac{\sqrt{3}}{2}$[/tex] ... The tangent function gives a value of -1 at angles of 135 degrees and 315 degrees (or -45 degrees if moving in the clockwise direction). These angles are in the second and fourth quadrants where the tangent function is negative.

Popular Problems. Trigonometry. Find the Exact Value cot (120 degrees ) cot (120°) cot ( 120 °) Apply the reference angle by finding the angle with equivalent trig values in the first quadrant. Make the expression negative because cotangent is negative in the second quadrant. −cot(60) - cot ( 60) The exact value of cot(60) cot ( 60) is 1 ...Sin 120 degrees = - Sin 60 degrees = [tex]$-\frac{\sqrt{3}}{2}$[/tex] ... The tangent function gives a value of -1 at angles of 135 degrees and 315 degrees (or -45 degrees if moving in the clockwise direction). These angles are in the second and fourth quadrants where the tangent function is negative. Use a diagram to explain why {eq}\sin(135) = \sin (45) {/eq}, but {eq}\cos (135) eq \cos (45) {/eq}. Sine and Cosine on the Unit Circle: The trigonometric functions sine and cosine are introduced in terms of the ratios of sides in a right triangle, but they can be defined more broadly than that. 3 2. - 3 3. - 3. 0° 30° 45° 60° 90° 120° 135° 150° 180° 210° 225° 240° 270° 300° 315° 330° 360°. Keywords: Trigonometric Values of Special Angles.Relationship Between Sine and Cosine. One notable relationship between the sine and cosine functions is that, suppose we have cos. ⁡. ( θ), a phase shift of 90 ∘ of the angle θ would give an equivalent sine value. Showing this mathematically, cos. ⁡. ( θ + 90 ∘) = sin. ⁡.At 90 degrees, you have a right angle. Larger than 90 degrees, you have an obtuse angle. And then, if you get all the way to 180 degrees, your angle actually forms a line. Learn for free about math, art, computer programming, economics, physics, chemistry, biology, medicine, finance, history, and more. Khan Academy is a nonprofit with the ...Chapter 6 Unit Circle Degrees Learn with flashcards, games, and more — for free. Home ... Only $35.99/year. Math. Geometry. Trigonometry; Unit Circle Sine and Cosine Values with Degree Angles. Flashcards. Learn. Test. Match. Flashcards. Learn. Test. Match. Created by. MrsPetersonRHS. Chapter 6 Unit Circle Degrees ... cos 135 - √2/2. cos 210 ...Explanation: For sin 105 degrees, the angle 105° lies between 90° and 180° (Second Quadrant ). Since sine function is positive in the second quadrant, thus sin 105° value = (√6 + √2)/4 or 0.9659258. . . Since the sine function is a periodic function, we can represent sin 105° as, sin 105 degrees = sin (105° + n × 360°), n ∈ Z.Here's the best way to solve it. Without using a calculator, compute the sine and cosine of 135° by using the reference angle. What is the reference angle? degrees. In what quadrant is the given angle? (answer 1, 2, 3, or 4) sin (135°) = cos (135) = ("NO DECIMALS Type sqrt (2) for 2 and sqrt (3) for 13.)Jul 10, 2019 · In this video, we learn to find the value of sin135. Here I have applied sin(180 - x) = sin(x) identity to find the value of sin(135). The URL of the video e... Find the exact values of the sine, cosine, and tangent of the angle. 165° = 135° + 30° sin 165 degrees= cos 165 degrees= tan 165 degrees= This problem has been solved! You'll get a detailed solution from a subject matter expert that helps you learn core concepts.This cosine calculator is a twin tool to our sine calculator - add to them the tangent calculator, and you'll have a pack of the most popular trigonometric functions.Simply type the angle - in degrees or radians - and you'll find the cosine value instantly. Read on to understand what is a cosine and to find the cosine definition, as well as a neat table with cosine values for basic ...

Explanation: For sin 65 degrees, the angle 65° lies between 0° and 90° (First Quadrant ). Since sine function is positive in the first quadrant, thus sin 65° value = 0.9063077. . . Since the sine function is a periodic function, we can represent sin 65° as, sin 65 degrees = sin (65° + n × 360°), n ∈ Z. ⇒ sin 65° = sin 425° = sin ...

For sin 315 degrees, the angle 315° lies between 270° and 360° (Fourth Quadrant ). Since sine function is negative in the fourth quadrant, thus sin 315° value = - (1/√2) or -0.7071067. . . ⇒ sin 315° = sin 675° = sin 1035°, and so on. Note: Since, sine is an odd function, the value of sin (-315°) = -sin (315°).Find the exact value of sin 135° Find the exact value of tan 3π/4. Find the exact value of tan 90° Find the value of cos(405)° Find the exact value of sin 330° Find the exact value of sin 150 degrees; Find the value of cos (31π/3) Find the value of sin 135° cosec 225° tan150° cot315° Find the value of cos(11(pi)/6)Trigonometry. Convert from Degrees to Radians 135 degrees. 135° 135 °. To convert degrees to radians, multiply by π 180° π 180 °, since a full circle is 360° 360 ° or 2π 2 π radians. 135°⋅ π 180° 135 ° ⋅ π 180 ° radians. Cancel the common factor of 45 45. Tap for more steps... 3⋅ π 4 3 ⋅ π 4 radians.Explanation: For sin 240 degrees, the angle 240° lies between 180° and 270° (Third Quadrant ). Since sine function is negative in the third quadrant, thus sin 240° value = - (√3/2) or -0.8660254. . . Since the sine function is a periodic function, we can represent sin 240° as, sin 240 degrees = sin (240° + n × 360°), n ∈ Z.ii) √1.030225. View Solution. Click here:point_up_2:to get an answer to your question :writing_hand:find the value ofsin 135 o.Use integers or decimals for any numbers in the expression.) O A. cos 2 135° - sin 2135º = o = COS O OB. cos 2 135° - sin 2135º = tan OC. cos 2 135° - sin 2 135º = sin The exact value of the expression is (Simplify your answer, including any radicals. Use integers or fractions for any numbers in the expression. Rationalize the denominator.)Method 2. By using the value of cosine function relations, we can easily find the value of sin 120 degrees. Using the trigonometry formula, sin (90 + a) = cos a, we can find the sin 120 value. As given, sin (90° +30°) = cos 30°. It means that sin 120° = cos 30°. We know that the value of cos 30 degrees is √3/2.Step 1. 5) Given equation is sin θ = cos θ → ( 1) For θ = 135 ∘ we have. View the full answer Answer. Unlock. Previous question Next question. Transcribed image text: Is θ=135∘ a solution to the equation sinθ= cosθ. Justify your answer and explain the approach you took to arrive at your answer. (2 marks: 1 mark for answor, 1 mark ...

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Explanation: Cos 135° is an angle in the second quadrant. In the second quadrant, cos is negative. cosθ = x r. cos135 = cos(180 − 45) = −cos45°. An angle of 45° is found in a right-angled triangle of sides 1:1:√2. cos45° = 1 √2. ∴ cos135° = −cos45° = − 1 √2. Note that √2 is an irrational number and cannot be given as an ...The exact value of sin(−135)° is −√2/2, as −135° is in the second quadrant where sine is positive, and its reference angle is 45°. Explanation: To determine the exact value of sin(−135)°, we first identify that −135 degrees is in the second quadrant, where sine is positive, and then locate its reference angle.Find the Exact Value sin(15 degrees ) Step 1. Split into two angles where the values of the six trigonometric functions are known. Step 2. Separate negation. Step 3. Apply the difference of angles identity. Step 4. The exact value of is . Step 5. The exact value of is . Step 6. The exact value of is . Step 7. The exact value of is . degrees-to-radians-calculator. sin-135. en. Related Symbolab blog posts. Practice Makes Perfect. Learning math takes practice, lots of practice. Just like running, it ... ii) √1.030225. View Solution. Click here:point_up_2:to get an answer to your question :writing_hand:find the value ofsin 135 o.Find the Exact Value sin(135-30) Step 1. Subtract from . Step 2. The exact value of is . Tap for more steps... Step 2.1. Apply the reference angle by finding the angle with equivalent trig values in the first quadrant. Step 2.2. Split into two angles where the values of the six trigonometric functions are known.sin(315) sin ( 315) Apply the reference angle by finding the angle with equivalent trig values in the first quadrant. Make the expression negative because sine is negative in the fourth quadrant. −sin(45) - sin ( 45) The exact value of sin(45) sin ( 45) is √2 2 2 2. − √2 2 - 2 2. The result can be shown in multiple forms.sin(135°) sin ( 135 °) Find the value using the definition of sine. sin(135°) = opposite hypotenuse sin ( 135 °) = opposite hypotenuse. Substitute the values into the definition. sin(135°) = √2 2 1 sin ( 135 °) = 2 2 1. Divide √2 2 2 2 by 1 1. √2 2 2 2. The result can be shown in multiple forms. Exact Form:c o s 135 o = c o s ( 45 o + 90 o) = − c o s 45 o = − 1 2orc o s 135 o = c o s ( 180 o − 45 o) = − c o s 45 o = − 1 2. Was this answer helpful?a sin A = b sin B = c sin C. Cosine law states that-a 2 = b 2 + c 2-2 b c. cos (A) b 2 = a 2 + c 2-2 a c. cos (B) c 2 = a 2 + b 2-2 a b. cos (C) Step 2: Click the blue arrow to submit. Choose "Solve the Triangle" from the topic selector and click to see the result in our Trigonometry Calculator! Examples-Solve the Triangle .Enter sin (135) to get the trigonometric function value and step-by-step solutions with Pro. Wolfram|Alpha is a powerful tool for math, science, and other domains. ….

a unit of plane angular measurement that is equal to the angle at the center of a circle subtended by an arc whose length equals the radius or approximately 180°/π ~ 57.3 degrees. secant. the length of the hypotenuse divided by the length of the adjacent side. Also equals 1/cos (θ) sin. sin (θ) is the ratio of the opposite side of angle θ ...Determine if True sin (45)=sin (135) sin(45) = sin(135) sin ( 45) = sin ( 135) The left side 0.70710678 0.70710678 is equal to the right side 0.70710678 0.70710678, which means that the given statement is always true. True. Free math problem solver answers your algebra, geometry, trigonometry, calculus, and statistics homework questions with ...Free Pre-Algebra, Algebra, Trigonometry, Calculus, Geometry, Statistics and Chemistry calculators step-by-stepFind the value of cos 135 °: Since, cos 135 ° = cos (90 ° + 45 °) Which clearly lies in the 2 n d quadrant, where cos is negative. since c o s (90 ° + θ) =-sin θ. Thus, cos 135 ° = cos (90 ° + 45 °) =-sin 45 ° sin 45 ° = 1 2 =-1 2. Hence, the value of cos 135 ° is -1 2.For formulas to show results, select them, press F2, and then press Enter. If you need to, you can adjust the column widths to see all the data. Sine of pi radians (0, approximately). Sine of pi/2 radians. Sine of 30 degrees. Sine of 30 degrees. Returns the sine of the given angle.Find value of Sin(135) - Sine or Calculate value of Sin, Cos, Tan, Cot, Cosec, Sec, SinH, CosH, TanH, CotH, CosecH, SecH, ASin, ACos, ATan, ACot, ACosec, ASec and ... Free Pre-Algebra, Algebra, Trigonometry, Calculus, Geometry, Statistics and Chemistry calculators step-by-step sin(45 degrees) Natural Language; Math Input; Extended Keyboard Examples Upload Random. Compute answers using Wolfram's breakthrough technology & knowledgebase, relied on by millions of students & professionals. For math, science, nutrition, history, geography, engineering, mathematics, linguistics, sports, finance, music… Sin 135 degrees, Find the Exact Value cos(135 degrees )^2-sin(135 degrees )^2. Step 1. Apply the cosine double-angle identity. Step 2. Multiply by . Step 3. Apply the reference angle by finding the angle with equivalent trig values in the first quadrant. Make the expression negative because cosine is negative in the third quadrant. Step 4., Find cot 135^@ First way: Trig Table of Special Arcs gives --> cot 135^@ = - 1 Second way: cot 135 = cos (135)/(sin (135)) cos 135 = cos (90 + 45) = cos 90.cos 45 ..., Free math problem solver answers your algebra, geometry, trigonometry, calculus, and statistics homework questions with step-by-step explanations, just like a math tutor., Trigonometrie. Ermittle den exakten Wert sin (135 Grad ) sin(135°) sin ( 135 °) Wende den Referenzwinkel an, indem du den Winkel mit den entsprechenden trigonometrischen Werten im ersten Quadranten findest. sin(45) sin ( 45) Der genau Wert von sin(45) sin ( 45) ist √2 2 2 2. √2 2 2 2. Das Ergebnis kann in mehreren Formen wiedergegeben werden., Discover available jobs for individuals with engineering degrees, along with ways that a master degree, certification, and licensure can grow your career. Updated May 23, 2023 theb..., Explanation: For sin 90 degrees, the angle 90° lies on the positive y-axis. Thus, sin 90° value = 1. Since the sine function is a periodic function, we can represent sin 90° as, sin 90 degrees = sin (90° + n × 360°), n ∈ Z. ⇒ sin 90° = sin 450° = sin 810°, and so on. Note: Since, sine is an odd function, the value of sin (-90 ..., How do you find the trigonometric functions of any angle? Well, I guess you could use a special representation of the function through a sum of terms, also known as Taylor Series. It is, basically, what happens in your pocket calculator when you evaluate, for example, #sin (30°)#. Your calculator does this: #sin (theta)=theta-theta^3/ (3 ..., a sin A = b sin B = c sin C. Cosine law states that-a 2 = b 2 + c 2-2 b c. cos (A) b 2 = a 2 + c 2-2 a c. cos (B) c 2 = a 2 + b 2-2 a b. cos (C) Step 2: Click the blue arrow to submit. Choose "Solve the Triangle" from the topic selector and click to see the result in our Trigonometry Calculator! Examples-Solve the Triangle ., Free Pre-Algebra, Algebra, Trigonometry, Calculus, Geometry, Statistics and Chemistry calculators step-by-step, We need to find the value of the sin ⁡ θ \sin\theta sin θ without using a calculator, where θ \theta θ is (− 135 °) (-135\degree) (− 135°). Step 2 2 of 5, Find the Exact Value sin(45 degrees )+sin(135 degrees )+sin(225 degrees )+sin(315 degrees ) Step 1. Simplify each term. Tap for more steps... Step 1.1. The exact value of is . Step 1.2. Apply the reference angle by finding the angle with equivalent trig values in the first quadrant. Step 1.3., Explanation: Cos 135° is an angle in the second quadrant. In the second quadrant, cos is negative. cosθ = x r. cos135 = cos(180 − 45) = −cos45°. An angle of 45° is found in a right-angled triangle of sides 1:1:√2. cos45° = 1 √2. ∴ cos135° = −cos45° = − 1 √2. Note that √2 is an irrational number and cannot be given as an ..., Trigonometric Functions Calculator ƒ (x) sin () = ? This online trigonometry calculator will calculate the sine, cosine, tangent, cotangent, secant and cosecant of angle values entered in degrees or radians. The trigonometric functions are also known as the circular functions., What is the equivalent radian measure for 140 degrees? Find sin(\frac{\pi}{3}) without the use of a unit circle or calculator. Find the exact value of: sin(135 degrees). Suppose that (7/25, y) is a point on quadrant 4 lying on the unit circle. Find y . Write the exact value, not a decimal approximation, Answer: sin (135°) = 0.7071067812. sin (135°) is exactly: √2/2. Note: angle unit is set to degrees. Use our sin (x) calculator to find the exact value of sine of 135 degrees - sin (135 °) - or the sine of any angle in degrees and in radians., Free math problem solver answers your algebra, geometry, trigonometry, calculus, and statistics homework questions with step-by-step explanations, just like a math tutor., Find the exact values of the sine, cosine, and tangent of the angle. 165° = 135° + 30° sin 165 degrees= cos 165 degrees= tan 165 degrees= This problem has been solved! You'll get a detailed solution from a subject matter expert that helps you learn core concepts., Online calculator to get the trig function values for standard degree and radian values. Listed here all the trig functions to calculate the sine, cosine, tangent, secant, cosecant and cotangent values for 135° degrees. Sine 135° Degrees. Cos 135° Degrees. Tan 135° Degrees. Sec 135° Degrees. Csc 135° Degrees. Cot 135° Degrees. Click the ..., Sin 270 degrees is the sine of an angle measuring 270 degrees. Equivalent angles have the same trigonometric function values. The unit circle is a circle with a radius of 1 unit that is used in trigonometry to define the values of trigonometric functions. Sin 90 degrees is equal to 1, and Sin 270 degrees is also equal to 1., It uses functions such as sine, cosine, and tangent to describe the ratios of the sides of a right triangle based on its angles. What are the 3 types of trigonometry functions? The three basic trigonometric functions are: Sine (sin), Cosine (cos), and Tangent (tan). , For example: find the values of sine and cosine for the angle -135 degrees. Answer by venugopalramana(3286) (Show Source): You can put this solution on YOUR website! I need help using special right triangles to find the exact values of sines and cosines for each angle. For example: find the values of sine and cosine for the angle -135 degrees., ii) √1.030225. View Solution. Click here:point_up_2:to get an answer to your question :writing_hand:find the value ofsin 135 o., Jun 5, 2023 · Sine definition. Sine is one of the three most common (others are cosine and tangent, as well as secant, cosecant, and cotangent). The abbreviation of sine is sin e.g. \sin (30\degree) sin(30°). The most common and well-known sine definition is based on the right-angled triangle. , We could use the half-angle identity: sin(1/2x)= +- sqrt((1-cosx)/2) 67.5^2 = 1/2(135^@) (Multiply 67.5 xx 2.) The formula doesn't tell us whether sin 67.5^@ is positive or negative, but, since it is an acute angle we know that the sine is positive. (Be careful of the difference between "sign" and "sine"). We also need cos135^@. (That is the special angle that is 45^@ in Quadrant II.) cos135 ..., To convert from degrees to radians, multiply the number of degrees by π/180. This will give you the measurement in radians. If you have an angle that's 90 degrees, and you want to know what it is in radians, you multiply 90 by π/180. This gives you π/2. Created by Sal Khan and Monterey Institute for Technology and Education., or. Note: We could also find the sine of 15 degrees using sine (45° − 30°). sin 75°: Now using the formula for the sine of the sum of 2 angles, sin ( A + B) = sin A cos B + cos A sin B, we can find the sine of (45° + 30°) to give sine of 75 degrees. We now find the sine of 36°, by first finding the cos of 36°., csc135° = √2. csc 135° = √2. csc 135 degrees = √2. The csc of 135 degrees is √2, the same as csc of 135 degrees in radians. To obtain 135 degrees in radian multiply 135° by π / 180° = 3/4 π. Csc 135degrees = csc (3/4 × π). Our results of csc135° have been rounded to five decimal places. If you want cosecant 135° with higher ..., How do you use the sum and difference identities to find the exact value of tan 105 degrees? How do you apply the sum and difference formula to solve trigonometric equations? How do you evaluate #sin(45)cos(15)+cos(45)sin(15)#?, Learn the values for these. The truth is there's no easy way to compute the tan/sin/cos of an angle without the calculator. The best you could do is use a Maclaurin series. That would involve having to convert from degrees in to radians. If you're unfamiliar with the concept of radians then for this example 45 degrees = pi/4 as in pi/4=3.1415 ..., Free math problem solver answers your algebra, geometry, trigonometry, calculus, and statistics homework questions with step-by-step explanations, just like a math tutor., This is a simple trigonometric cosine calculator to calculate the cos value in degrees or radians. In order to calculate the cos value on the calculator, just enter the angle and select the angle type as degrees (°) or radians (rad) from the drop down select menu. The calculator will instantly gives you in the result of the cosine value. α., 135° 135 °. Since the angle 135° 135 ° is in the second quadrant, subtract 135° 135 ° from 180° 180 °. 180°− 135° 180 ° - 135 °. Subtract 135 135 from 180 180. 45° 45 °. Free math problem solver answers your algebra, geometry, trigonometry, calculus, and statistics homework questions with step-by-step explanations, just like a ..., Calculate the value of the sin of -15 ° To enter an angle in radians, enter sin(-15RAD) sin(-15 °) = -0.258819045102521 Sine, in mathematics, is a trigonometric function of an angle. The sine of ...