If the voltage and current supplied to a circuit or load by a source are:
Vs = 170<(-0.157) V
Is = 13<0.28 A
a) The power supplied by the source which is dissipated as heat or work in the circuit (load).
b) The power stored in reactive components in the circuit (load).
c) The power factor angle and power factor.
Problem is also in the attached file.
This solution involves step-by-step calculations for power.