prove that sin cube theta + cos cube theta / sin theta + cos theta + sin theta cos theta =1 Share with your friends Share 31 Manbar Singh answered this LHS = sin3θ + cos3θsin θ + cos θ + sin θ . cos θ=sin θ + cos θsin2θ + cos2θ - sin θ . cos θsin θ + cos θ + sin θ . cos θ=sin2θ + cos2θ - sin θ . cos θ + sin θ . cos θ=1 - sin θ . cos θ + sin θ . cos θ=1=RHS 74 View Full Answer
