Question: Find the period, frequency, amplitude, time shift, and phase angle of the following sinusoids. (a) (v_{1}(t)=240 cos (120 pi t)-240 sin (120 pi t) mathrm{V})

Find the period, frequency, amplitude, time shift, and phase angle of the following sinusoids.

(a) $v_{1}(t)=240 \cos (120 \pi t)-240 \sin (120 \pi t) \mathrm{V}$

(b) $v_{2}(t)=-30 \cos (50 \mathrm{k} \pi t)+40 \sin (50 \mathrm{k} \pi t) \mathrm{V}$

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