Question

The value of 1 – 2 sin² 45° is:

पर्याय

• 1

• `1/2`

• `1/4`

• 0

Answer 1

0

Explanation:

1 – 2 sin² 45°

= cos(2 × 45°) [∵ cos 2A = 1 – 2 sin² A]

= cos 90°

= 0