Principal value of "tan"^(-1)1+"cos"^(-1...

Principal value of `"tan"^(-1)1+"cos"^(-1)((-1)/(2))+"sin"^(-1)((-1)/(2))` is

A

`(2pi)/(3)`

B

`(3pi)/(4)`

C

`pi/2`

D

`6 pi`

Verified by Experts

The correct Answer is:

B

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