An acoustic signal is composed of the first three harmonics of a wave of fundamental frequency 376 Hz. If these harmonics are described, in order, by cosine waves with amplitudes of 0.270, 0.560, and 0.360, what is the total amplitude of the signal at time 0.846 seconds? Assume the waves have phase angles θn = 0.

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To find the total amplitude of the signal at a given time we need to add the individual amplitudes o... View the full answer