kleinwolf Posted October 4, 2009 Posted October 4, 2009 Is it possible to express [math]\sin(4x)[/math] in terms of [math]\sin(x),\sin(2x),\sin(3x)[/math] only ??
ajb Posted October 4, 2009 Posted October 4, 2009 You have the multiple angle formula. There are many different ways to present [math]sin(4x)[/math].
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