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int (1-cosx)"cosec"^(2)x dx=f(x)+c rArr ...

`int (1-cosx)"cosec"^(2)x dx=f(x)+c rArr f(x)=`

A

tan x /2

B

cot x/2

C

2 tan x/2

D

`(1)/(2)` tan x/2

Text Solution

Verified by Experts

The correct Answer is:
A
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