cos[2cos^(-1)((1)/(5))+sin^(-1)((1)/(5))...

`cos[2cos^(-1)((1)/(5))+sin^(-1)((1)/(5))]`=

A

(a) `(2sqrt(6))/(5)`

B

(b) `-(2sqrt(6))/(5)`

C

(c) `(1)/(5)`

D

(d) `-(1)/(5)`

Verified by Experts

The correct Answer is:

B

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