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If A+B+C=pi/2 prove the following (i) ...

If `A+B+C=pi/2` prove the following
(i) `sin 2A+sin 2B +sin 2C=4 cos A cos B cos C`
(ii) `cos 2A +cos 2B+cos 2C=1+4 sin A sin B sin C.`

Text Solution

Verified by Experts

The correct Answer is:
`1+4 sin A sin B sin C`
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