Question

sin 2A = 2 sin A is true when A = ______.

विकल्प

• 0°

• 30°

• 45°

• 60°

Answer 1

sin 2A = 2 sin A is true when A = 0.

Explanation:

Out of the given alternatives, only A = 0° is correct.

As sin 2A = sin 0° = 0

2 sinA = 2sin 0° = 2(0) = 0

Hence, 0° is correct.