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Let (1+sqrt(1+x))tany=1+sqrt(1-x). Then...

Let `(1+sqrt(1+x))tany=1+sqrt(1-x)`. Then sin 4y is equal to

A

a) 4x

B

b) 2x

C

c) x

D

d) none of these

Text Solution

Verified by Experts

The correct Answer is:
C
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