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The value of cos ^(-1)""[cot ((pi)/(2...

The value of ` cos ^(-1)""[cot ((pi)/(2))]+cos^(-1)""[sin ((2pi)/(3))]` is

A

`(2pi)/(3)`

B

`(pi)/(3)`

C

`(pi)/(2)`

D

`pi`

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The correct Answer is:
A
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