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If (1+sqrt(1+a)) tan alpha =1 + sqrt(1- ...

If `(1+sqrt(1+a)) tan alpha =1 + sqrt(1- alpha ) ` then `sin 4 alpha =

A

`4x`

B

`2x`

C

`x`

D

none of these

Text Solution

Verified by Experts

The correct Answer is:
C
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