Two tangent segments, PA and PB, are drawn from an external point P to a circle with center O. If ∠APB=70°, what is the measure of the angle ∠AOB?
Show answer & explanation
Correct answer: B
Explanation
Given:
∠APB = 70°
∠APB + ∠AOB = 180°
70° + ∠AOB = 180°
∠AOB = 180° − 70°
∠AOB = 110°