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cos(2cos^(-1)x+sin^(-1)x) = where x=1/5...

`cos(2cos^(-1)x+sin^(-1)x)` = ______ where `x=1/5`.

A

`(2sqrt6)/5`

B

`-(2sqrt6)/5`

C

`(3sqrt6)/5`

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
B
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