Question

In the given figure, PA and PB are two tangents A to the circle with centre O. If ∠APB = 60° then ∠OAB is ______.

विकल्प

• 15°

• 30°

• 60°

• 90°

Answer 1

In the given figure, PA and PB are two tangents A to the circle with centre O. If ∠APB = 60° then ∠OAB is 30°.

Explanation:

∠APB = 2∠OAB

⇒ `∠OAB = 1/2 ∠APB`

⇒ ∠OAB = 30°