# Sum of Sines

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The sum of two sine waves with the same frequency is again a sine wave with frequency . This is used for the analysis of linear electrical networks excited by sinusoidal sources with the frequency . In such a network all voltages and currents are sinusoidal. The addition of sine waves is very simple if their complex representation is used.

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Contributed by: Carsten Roppel (December 2011)

Open content licensed under CC BY-NC-SA

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