If tangent \( \mathrm{AP} \) and \( \mathrm{AQ} \) from a point \( \mathrm{A} \) to a circle wit...

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If tangent \( \mathrm{AP} \) and \( \mathrm{AQ} \) from a point \( \mathrm{A} \) to a circle with centre \( \mathrm{O} \) are inclined to each other at an angle of \( 80^{\circ} \), then \( \angle \mathrm{AOP} \) is equal to
a. \( 60^{\circ} \)
b. \( 50^{\circ} \)
c. \( 80^{\circ} \)
d. \( 45^{\circ} \)
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