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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.
बेरीज
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उत्तर
Here, ∠DAC = ∠CBD = 25°
(Angle subtended by the same chord on the circle are equal)
Again, 120° = b + 25°
(In a triangle, measure of exterior angle is equal to the sum of pair of opposite interior angles)
`=>` b = 95°
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