Trigonometry! #133

Geometry Level 1

For x[0,π2]x\in\left[0,\frac{\pi}{2}\right]if cosx+cos2x+cos3x=3\cos x + \cos 2x + \cos 3x = 3 then find the value of sinx+sin2x+sin3x\sin x + \sin 2x + \sin 3x

This problem is part of the set Trigonometry.

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