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int (1)/(7 + 5 cos x ) dx =...

`int (1)/(7 + 5 cos x ) ` dx =

A

`(1)/(sqrt(5)) tan^(-1)( (1)/(sqrt(3)) tan ""(x)/(2) ) + c `

B

`(1)/(sqrt(6)) tan^(-1) ((1)/(sqrt(6)) tan"" (x)/(2) ) + c `

C

`(1)/(sqrt(7)) tan^(-1)(tan""(x)/(2)) + c `

D

`(1)/(sqrt(4)) tan^(-1) (tan ""(x)/(2)) + c `

Text Solution

Verified by Experts

The correct Answer is:
B
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