Question

what is the integral of cos 3x all over sin 2x?

Answer 1

you can break cos 3x = cos (2x +x) = cos 2x cos x + sin 2xsinx..then divide the whole thing by sin2x.and break again into 2 parts, first part you have tan 2x cos x+ second part just has sinx left. then, take integral .it is easy then

Answer 2

and for the first part you have a formula to break tan 2x into something respect to x. figure out by yourself. if you cannot, tell me then

Answer 3

thank you:)