Solve Sinx + Sin3x + Sin5x = 0. Share with your friends Share 138 Lalit Mehra answered this Hi! Cheers! 121 View Full Answer Karthick Lakshman answered this sin x + sin 3x + sin 5xsin x + 2sin4x(-sin x)sin x ( 1-2sin 4x)sin x = 0 & 1- 2sin 4x = 0 & 2sin 4x = 1 & sin 4x = 1/2 -42 Ranjeeta Yadav answered this sinx + sin3x +sin5x = 0sinx + 2sin4xcosx = 0sinx + 2 x 2sin2x cos2x cosx =0sinx +4 x 2 sinxcos2xcosx = 0sinx(8cos2x cosx) = 0sinx = 0x = npi8cos2xcosx = 0cos2x = 02x = (2m + 1)pi/2x = (2m+1)pi/4cosx = 0x = (2p+1)pi/2 28
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