1. Find the phasor form of the following functions: (a) v (t) = 21 cos (4t- 15°) V (b) (c) v (t) = 120 sin (10t - 50°) V (d) i (t) = -60 cos (30t+10°) mA i(t) -8 sin (10t +70°) mA =

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