If tangents PA and PB from a point P to a circle with centre O are inclined to each other at an angle of 80° ,then ∟AOB= ______ *<

If tangents PA and PB from a point P to a circle with centre O are inclined to each other at an angle of 80° ,then ∟AOB= ______ *

A)70°

B)90°

C)40°

D)100°

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