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The function f(x) =tan^(-1)(sinx+cosx) i...

The function `f(x) =tan^(-1)(sinx+cosx)` is an increasing function in

A

`(pi//4,pi//2)`

B

`(-pi//2,pi//4)`

C

`(0,pi//2)`

D

`(-pi//2,pi//2)`

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The correct Answer is:
B
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