A voltage source v(t) = 100 cos(2π50 t) [V] is applied to a nonlinear load, resulting in non-sinusoidal current: i(t) = 4 + 10 cos(2π50 t +30°) + 20 cos (4π50 t +45°) [A]. Determine:
(a) the power absorbed on the load,
(b) the power factor, and
(c) the total harmonic distortion of the load current.