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If f(x)=(1-x)/(1+x), then f[ f(cos2 t...

If `f(x)=(1-x)/(1+x)`, then `f[ f(cos2 theta)]=`

A

`tan 2 theta`

B

`sec 2 theta`

C

`cos 2 theta`

D

`cot 2 theta`

Text Solution

Verified by Experts

The correct Answer is:
C
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