The voltage across the terminals of a circuit isv(t) = [30 + 20cos(60πt + 45°) + 10cos(120...

The voltage across the terminals of a circuit is

v(t) = [30 + 20cos(60πt + 45°) + 10cos(120πt − 45°)] V

If the current entering the terminal at higher potential is

i(t) = 6 + 4 cos(60 πt + 10°) − 2cos(120 πt − 60°) A

find:

(a) the rms value of the voltage,

(b) the rms value of the current,

(c) the average power absorbed by the circuit.