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Triple Angle Formullas n theur derivations |
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Answer» ese formulas, we also have the FOLLOWING identities for sin 3 ( θ ) \sin^3(\THETA) sin3(θ) and cos 3 ( θ ) \cos^3 (\theta) cos3(θ) in terms of LOWER POWERS: sin 3 ( θ ) = 3 sin ( θ ) − sin ( 3 θ ) 4 , cos 3 ( θ ) = cos ( 3 θ ) + 3 cos ( θ ) 4 . |
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