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प्रश्न
In the following figure, O is the centre of the circle. Find the values of a, b, c and d.
उत्तर
∠APB = 90° (Angle in a semicircle)
∴ ∠BAP = 90° – 45° = 45°
Now, d = ∠BCP = ∠BAP = 45°
(Angle subtended by the same chord on the circle are equal)
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