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int(1)/(5+4cos^(2)x)dx=...

`int(1)/(5+4cos^(2)x)dx=`

A

`(3)/(sqrt(5))Tan^(-1)((sqrt(5))/(3)tanx)+c`

B

`(1)/(3sqrt(5))Tan^(-1)((sqrt(5))/(3)cosx)+c`

C

`(1)/(3sqrt(5))Tan^(-1)((sqrt(5))/(3)tanx)+c`

D

none

Text Solution

Verified by Experts

The correct Answer is:
C
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