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The function f(x)""=""t a n^(-1)(sinx""+...

The function `f(x)""=""t a n^(-1)(sinx""+""cosx)` is an increasing function in (1) `(pi/4,pi/2)` (2) `(-pi/2,pi/4)` (3) `(0,pi/2)` (4) `(-pi/2,pi/2)`

A

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

B

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

C

`(0, pi//2)`

D

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

Text Solution

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The correct Answer is:
B
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