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sin A+ sin 3A+ sin 5A + sin 7A=...

`sin A+ sin 3A+ sin 5A + sin 7A=`

A

`4 sin A cos 2A cos 4A `

B

`4 cos A sin 2A sin 4A `

C

`4 cos A cos 2A sin 4A `

D

`4 sin A cos 2A cos 4A `

Text Solution

Verified by Experts

The correct Answer is:
C
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