Contents

- How do you find the value of sin 15 in COS 15?
- What are the value of sin 15?
- How do you find the value of cos 15?
- What is the value of 2sin15 cos15?
- What is the value of cos 15 in fraction?
- How do you find cos 15 without a calculator?
- Is Cos 15 rational?
- What is the value of sin?
- How do you find cos 75?
- What is the value of cos?
- What is the value of cot 15?
- How can we find the value of cos?
- What is the value of sin 15 cos 75 degrees into COS 15 degrees?
- What is the formula of 2 sin a cos B?

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

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.

∴ 2 × sin 15° × cos 15° = **sin 30°** =

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

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

Expert Verified Answer

**It’s a rational number** .

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.

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…)**.

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)**.

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.

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

The identities

2 sinA cosB = **sin(A + B) + sin(A − B)**

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

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