Fformwla de Moivre

Mae theorem de Moivre yn nodi fod:

$\{\cos {(\theta )}+\sin {(\theta )i}\}^{n}=\cos {(n\theta )}+\sin {(n\theta )i}\,$$\{\cos {(\theta )}+\sin {(\theta )i}\}^{n}=\cos {(n\theta )}+\sin {(n\theta )i}\,$

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