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Question
In the given figure, PA and PB are two tangents A to the circle with centre O. If ∠APB = 60° then ∠OAB is ______.
Options
15°
30°
60°
90°
MCQ
Fill in the Blanks
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Solution
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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