Maths-
General
Easy
Question
∫ [1 + tan x α tan (x + α)] dx is equal to -
- cot α. log
- tan α . log
- cot α . log
- none of these
The correct answer is: cot α . log
dx
= 
= 
= 
Multiply denominator and numerator by sin
= 
= 
= 
= 
= 
= 
= 
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