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sin theta +sin 2theta +sin 3theta = sin alpha and cos theta + cos 2theta +cos 3theta= cos alpha then theta is equal to 1) alpha/2 2)alpha 3)2alpha 4)alpha/6

Answer» sin theta +sin 2theta +sin 3theta = sin alpha and cos theta + cos 2theta +cos 3theta= cos alpha then theta is equal to
1) alpha/2 2)alpha 3)2alpha 4)alpha/6


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