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If cos 2 alpha=(3 cos 2beta-1)/(3-cos 2b...

If cos 2 alpha=(3 cos 2beta-1)/(3-cos 2beta),then `tan alpha` is equal to

A

`sqrt2 tanbeta`

B

`tan beta`

C

`sin 2 beta`

D

`sqrt2 cot beta`

Text Solution

Verified by Experts

The correct Answer is:
A
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