sin half angle

Using half-angle formula, the value of sin 15° is: => - 2 - 3 2 or - 2 + 3 2 or 2 + 3 2 or 2 - 3 2..

Which of the following is an angle of half turn? => 180° or 360° or 270° or 90°..

Theorem: - If ABC is a triangle with sides a = BC, b = CA, c = AB, then prove that where 2s = a + b + ..

Angles - Fig.(i) Fig.(ii) Fig.(iii) Let OA and OB two half lines with common end point O. The half lines OA and OB are the sides of an angle and the point O is the vertex of the angle. An angle is an amount of rotation of a half-..

Find the exact value of tan 150° using half-angle formula. => - 3 3 or 3 3 or 3 or - 3..

Using half-angle formula, find the value of tan 15°. => 3 6 or 2 - 3 or 2 + 3 or 2 3 3..

Using half angle formula, the exact value of cos 75° is: => 2 - 3 2 or - 2 + 3 2 or - 2 - 3 2 or 2 + 3 2..

- 1 x For x [-1, 1], if q is an angle whose sine is x, then we say that sine inverse x is q and write sin -1 x = q . For practical purposes, only principal values of sin - 1 x are considered. sin - 1 x is a function of x with domain [-1..

Evaluate cos 22.5° using half-angle formula. => 2 4 or 2 - 2 2 or 2 + 2 2 or 1 2..

Use the double-angle formula to find the value of sin 90°. => 1 or -1 or 0 or 2 2..