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

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

A

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

B

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

C

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

D

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

Text Solution

Verified by Experts

The correct Answer is:

A

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