In the given figure, O is the centre of the circle. If PA and PB are tangents from an external point P to the circle, then ∠AQB is equal to
100o
50o
80o
70o
If tangents PA and PB from a point P to a circle with centre O are inclined to each other an angle of 80, then ∠POA is equal to
(A) 50 (B) 60
(C) 70 (D) 80