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4 sin""(5 theta )/(2) cos""(3 theta )/(2...

`4 sin""(5 theta )/(2) cos""(3 theta )/(2) cos 3 theta = `

A

`sin 7 theta + sin 4 theta + sin 2 theta + sin theta `

B

`sin 7 theta + sin 4 theta - sin 2 theta + sin theta `

C

`sin 7 theta - sin 4 theta - sin 2 theta + sin theta `

D

`sin 7 theta + sin 4 theta + sin 2 theta - sin theta `

Text Solution

Verified by Experts

The correct Answer is:
B
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