Question

If a = sin 175°+ cos 175°, then ______.

विकल्प

• a > 0

• a < 0

• a = 0

• a = 1

Answer 1

If a = sin 175°+ cos 175°, then a < 0.

Explanation:

We have,

a = sin 175°+ cos 175°

⇒ a = sin (180° - 5°) + cos (180° - 5°)

= sin 5° - cos 5°

Since, cos 5° > sin 5°

∴ a < 0