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