TrigonometryChallengeTrigonometric Equations ShareTrigonometric Equations · Challenge problemFind the sum of all solutions of sinx+sin3x=cosx+cos3x\sin x + \sin 3x = \cos x + \cos 3xsinx+sin3x=cosx+cos3x in the interval [0,2π)[0, 2\pi)[0,2π).Check Show answer Walk through it step by step Practice more like this Review this concept