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( cos 6 x + 6 cos 4 x+ 15 cos 2 x+ 10)/...

`( cos 6 x + 6 cos 4 x+ 15 cos 2 x+ 10)/( cos 5 x+ 5 cos 3 x + 10 cos x)=`

A

`2 sin x + cos x`

B

`- 2 sin x`

C

`cos 2x`

D

`sin 2x`

Text Solution

Verified by Experts

The correct Answer is:
B
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