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Using Euler’s Formula to Derive Sine and Cosine
November 24, 2021

Table of Contents


Cosine and sine can be written as the sum of two complex exponentials. Euler’s formula states

(1)   \begin{equation*}e^{j\omega} = \text{cos}(\omega) + j \text{sin}(\omega).\end{equation*}

More posts on complex numbers and complex sinusoids:

For more information check out my book Fundamentals of Digital Signal Processing: Complex Numbers, available on Amazon now!