AP and TS EAMCET Engineering Model Paper 2
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If 2 cos A + 3 cos B + 5 cos C = 0 = 2 sin A + 3 sin B + 5 sin C then 8 cos 3 A + 27 cos 3 B + 125 cos 3 C = k cos ( A + B + C ) , then k =
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