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प्रश्न
In the given figure, PA and PB are two tangents A to the circle with centre O. If ∠APB = 60° then ∠OAB is ______.
पर्याय
15°
30°
60°
90°
MCQ
रिकाम्या जागा भरा
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उत्तर
In the given figure, PA and PB are two tangents A to the circle with centre O. If ∠APB = 60° then ∠OAB is 30°.
Explanation:
∠APB = 2∠OAB
⇒ `∠OAB = 1/2 ∠APB`
⇒ ∠OAB = 30°
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