1. The problem statement, all variables and given/known data Hi. I want to find the fourier series of sin^2 x + sin ^3x and sin θ = [e^iθ - e-iθ]/2i 2. Relevant equations 3. The attempt at a solution So if i use sin x = [e^ix - e-ix]/2i I will get for the first term: [e^2ix + e^-2ix -2]/-4 I can do the same for the second term but what do i do from here..? I'm not sure how to integrate these.