I've been at this for a little while now but I'm not quite sure how to proceed. Would someone please help me? Cos3(theta) = 4Cos^3(theta) - 3Cos(theta)
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Also I'm only supposed to manipulate a single side of the equation.
Originally Posted by Lucian I've been at this for a little while now but I'm not quite sure how to proceed. Would someone please help me? Cos3(theta) = 4Cos^3(theta) - 3Cos(theta) finish it ...
I think I've got it, thank you for the help Skeeter! (2Cos^3(t)-Cos(t)) - (2)(Cos(t)-Cos^3(t)) (2Cos^3(t)-Cos(t)) - (2Cos(t) - 2Cos^3(t)) 2Cos^3(t) -Cos(t) - 2Cos(t) + 2Cos^3(t) 4Cos^3(t) - 3Cos(t)
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