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int (cos 2x)/(cosx^(2) sin^(2)x) dx = ?...

`int (cos 2x)/(cosx^(2) sin^(2)x) dx = ?`

A

`-cotx - tan x + C`

B

`- cot x + tanx + C`

C

`cot x - tan x + C`

D

`cot x + tanx + C`

Text Solution

Verified by Experts

The correct Answer is:
A
`cos 2x = (cos^(2)x - sin^(2)x)`.
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