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  3. each of the following signals may be simplified and expressed...

Question: each of the following signals may be simplified and expressed...

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Each of the following signals may be simplified, and expressed as a single sinusoid of the form: A cos(wt + φ). For each signal, draw a vector diagram of the complex amplitudes (phasors), and use vector addition to estimate the amplitude A and phase φ of the sinusoid. Then use the phasor addition theorem to find the exact values for A and φ. (a) Za(t) = 2 cos(27nt-2r/3)-cos(2at + 3π/4) (c) zdt)= cos(120t+3r/4)+cos(120mt+ 5T/4)+2sin( 120t-r/4)+2sin( 120π1+π/4) Hint: Note that the last two terms in xe(t) are sines rather than cosines.

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