Question

4). [{1+ + tan x. tan (x+a)}dx =
1) cot a logcot(x +Q) +
cot(x+a)
2) cot a log
to
COS X
COS X
tc
3)
cot a log
cos(x + a)
sin x
tc
4) cot a log
cot(x + a which is correct option?​

Answer 1

Answer:

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