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$PA$ and $PB$ are tangents to a circle centred at $O$. If $\angle PBA = 65^{\circ}$, then
n$\angle APB$ equals :
n$\angle APB$ equals :
- (a)$65^{\circ}$
- (b)$60^{\circ}$
- (c)$50^{\circ}$
- (d)$35^{\circ}$
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(C) $50^{\circ}$