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1+ cos 2 theta + cos 4 theta + cos 6 the...

`1+ cos 2 theta + cos 4 theta + cos 6 theta = `

A

`4 sin theta * sin 2 theta * sin 3theta `

B

`4 cos theta * cos 2 theta * cos 3 theta `

C

`4 tan theta * tan 2 theta * tan 3 theta `

D

`4 cot theta * cot 2 theta * cot 3 theta `

Text Solution

Verified by Experts

The correct Answer is:
B
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