1.

The value of the expression Sin^(-1)(Sin""(22pi)/7)+Cos^(-1)(Cos""(5pi)/3)+Tan^(-1)(Tan""(5pi)/7)+Sin^(-1)(Cos2) is

Answer»

`(17pi)/42-2`
-2
`-pi/21-2`
`pi/21`

ANSWER :A


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