verify the identify: since cos2u=cos^2-sin^2 would the same be applied to cos3u..as in = cos^3-sin^3, or am i wrong
Last edited by algebra2; Apr 17th 2008 at 08:12 PM. Reason: anaLytical reasons
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Originally Posted by algebra2 verify the identify: since cos2u=cos^2-sin^2 would the same be applied to cos3u..as in = cos^3-sin^3, or am i wrong Soooo.... and you can take it from here. -Dan
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