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What is the value of [(cos 3 theta + 2co...

What is the value of `[(cos 3 theta + 2cos 5 theta+ cos 7 theta)div(cos theta + 2cos 3 theta + cos 5 theta)] + sin 2 theta tan 3 theta`?
`[(cos 3 theta + 2cos 5 theta+ cos 7 theta)div(cos theta + 2cos 3 theta + cos 5 theta)] + sin 2 theta tan 3 theta` का मान क्या है?

A

` cos 2 theta `

B

`sin 2 theta `

C

` tan 2 theta `

D

cot ` theta sin 2 theta `

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The correct Answer is:
A
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