Cosine of Integer Multiple of Argument/Formulation 5/Examples
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Examples of Use of Cosine of Integer Multiple of Argument/Formulation 5
Cosine of Quintuple Angle
- $\cos 5 \theta = \cos \theta + 2 \cos \theta \paren {\cos 4 \theta - \cos 2 \theta}$
Cosine of Sextuple Angle
- $\map \cos {6 \theta } = -1 + 2 \cos \theta \paren {\cos 5 \theta - \cos 3 \theta + \cos \theta }$