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प्रश्न
If O is the centre of the circle, find the value of x in the following figure
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उत्तर
We hav
∠CBD = 65°
∴∠ABC+∠CBD=180°
⇒ ∠ABC + 65° = 180°
⇒ ∠ABC = 180° - 65° = 115°
∴Reflex ∠AOC = 2∠ABC
⇒ x = 2´115°
⇒ x = 230°
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