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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)/(cos theta + 2cos 3 theta + cos 5 theta)] + sin 2 theta tan 3 theta`?
`[(cos 3 theta + 2cos 5 theta+ cos 7 theta)/(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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