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int(dx)/(5+4cosx)=...

`int(dx)/(5+4cosx)=`

A

(a) `2/3tan^(-1)(1/3tanx)+c`

B

(b) `1/3tan^(-1)(1/3tanx)+c`

C

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

D

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

Text Solution

Verified by Experts

The correct Answer is:
C
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