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int(1)/(1+cos^(2)x+2 cos x sinx)dx=...

`int(1)/(1+cos^(2)x+2 cos x sinx)dx=`

A

`Tan^(-1)(1+tanx)+c`

B

`Tan^(-1)(1-tanx)+c`

C

`2Tan^(-1)(1+tanx)+c`

D

none

Text Solution

Verified by Experts

The correct Answer is:
A
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