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> Sin5x = sinx(cos^2 2x - sin^2 2x) 2 (cosx )(cos2x)(sin2x)
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Sin5x = sinx(cos^2 2x - sin^2 2x) 2 (cosx )(cos2x)(sin2x)
Lilp22
Dec 5, 2010, 09:15 AM
Prove