# What Is the Value of Sin 15 and Cos 15?

July 29, 2022

## What are the value of sin 15?

The actual value of sin 15 degrees is (√3−1)/(2√2).

## How do you find the value of cos 15?

How do I find out the value of Cos 15 degrees? The value of cos 15 degrees can be calculated by constructing an angle of 15° with the x-axis and then finding the coordinates of the corresponding point (0.9659, 0.2588) on the unit circle. The value of cos 15° is equal to the x coordinate (0.9659). ∴ cos 15° = 0.9659.

## What is the value of 2sin15 cos15?

∴ 2 × sin 15° × cos 15° = sin 30° =

Let’s discuss the concepts related to trigonometry and trigonometric functions.

## What is the value of cos 15 in fraction?

Answer: The value of cos 15° = (√3+1)/2√2.

## Is Cos 15 rational?

Expert Verified Answer

It’s a rational number .

## How do you find cos 75?

The value of cos 75 degrees can be calculated by constructing an angle of 75° with the x-axis and then finding the coordinates of the corresponding point (0.2588, 0.9659) on the unit circle . The value of cos 75° is equal to the x coordinate (0.2588). ∴ cos 75° = 0.2588.

## What is the value of cos?

The value of cos 1 degree is 0.9998476. . .. Cos 1 degree radian is written as cos (1° × π/180°), i.e. H. cos(0.017453…).

## What is the value of cot 15?

Cot 15 degrees is the value of the trigonometric cotangent function for an angle of 15 degrees. The value of Cot 15° is 2 + √3 or 3.7321 (approximately).

## How can we find the value of cos?

Thus, cos x = 0 implies x = (2n + 1)π/2 , where n can be any integer. For a triangle ABC with sides a, b, and c opposite angles A, B, and C, the law of cosines is defined. . Once we have found the values ​​of the sine functions, finding the cosine functions is easy.

## What is the value of sin 15 cos 75 degrees into COS 15 degrees?

So: sin15∘cos75∘+cos15∘sin75∘ = sin(90∘) = 1. So we have the following simplification result: sin15∘cos75∘+cos15∘sin75∘ = 1.

## What is the formula of 2 sin a cos B?

The identities

2 sinA cosB = sin(A + B) + sin(A − B)

### References:

1. https://www.youtube.com/watch?v=3Z9BsW70y4s
2. https://byjus.com/maths/value-of-sin-15/
3. https://www.cuemath.com/trigonometry/cos-15-degrees/
4. https://testbook.com/question-answer/value-of-2-sin-15-cos-15–5fa9699091cc7e5573b92330
5. https://www.cuemath.com/questions/find-the-value-of-cos-15-using-cos-a-b-identity/
6. https://www.youtube.com/watch?v=SZj6zBkGYGc
7. https://brainly.in/question/1558937
8. https://www.youtube.com/watch?v=QZc7d4TufAk
9. https://www.cuemath.com/trigonometry/cos-75-degrees/
10. https://www.cuemath.com/trigonometry/cos-1-degrees/
11. https://www.cuemath.com/trigonometry/cot-15-degrees/
12. https://byjus.com/maths/cos-0/
13. https://socratic.org/questions/how-do-you-simplify-sin-15-cos-75-cos-15-sin-75
14. https://www.mathcentre.ac.uk/resources/Engineering%20maths%20first%20aid%20kit/latexsource%20and%20diagrams/4_4.pdf

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