Question Number 102064 by bramlex last updated on 06/Jul/20

∫ ((sin 3x)/(cos 5x. cos 2x)) dx ?

Answered by Dwaipayan Shikari last updated on 06/Jul/20

∫((sin3x−sin7x)/(cos2xcos5x))+((sin7x)/(cos2xcos5x))=∫−2tan2xdx+∫((sin5xcos2x+cos5xsin2x)/(cos2xcos5x))dx  ∫−tan2xdx+∫tan5xdx=(1/2)log(cos2x)−(1/5)log(cos5x)+Constant