If y= (sin^(2)x)/(1+cot x)+ (cos^(2)x)/(...

If `y= (sin^(2)x)/(1+cot x)+ (cos^(2)x)/(1+tan x)`, then y'(x) is equal to

A

`2cos^(2)x`

B

`2 cos^(3)x`

C

`-cos 2x`

D

`cos 2x`

Verified by Experts

The correct Answer is:

C

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