Calculate the first three instants in time (t > 0) for which the following functions are
Chapter 10, Problem 6(choose chapter or problem)
Calculate the first three instants in time (t > 0) for which the following functions are zero, by first converting to a single sinusoid: (a) cos 3t − 7 sin 3t; (b) \(cos\ (10t + 45^{\circ})\); (c) cos 5t− sin 5t; (d) cos 2t + sin 2t− cos 5t + sin 5t.
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