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

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

A

`(1)/(sqrt(2)) tan^(-1) (tan x) +c `

B

`(1 )/(sqrt(2))tan^(-1)(1/2 tanx )+C`

C

`(1)/(sqrt(2)) tan^(-1)((1)/(sqrt(2)) tan x)+C`

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
C
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