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In a Delta ABC, angle A=65^(@), angle C=...

In a `Delta ABC, angle A=65^(@), angle C=75^(@)`, where O is circumcentre , find `angle OAC`.

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The correct Answer is:
`R = (abc)/( 4 Delta)`
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ADVANCED MATHS BY ABHINAY MATHS ENGLISH-GEOMETRY-QUESTIONS
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  13. If in a Delta ABC angle bisectors of exterior angle angle B and angl...

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