$6.(5+5)$ Determine the complex power, apparent power, average power absorbed$,$ reactive power, and power factor $($including whether it is leading or lagging$)$ for a load circuit whose voltage and current at its input terminals are given by: $($a$)()=100(37730)$ V$,()=2\mathrm{.}5(37760)($b$)()=25(2103+40)$ V$,()=0\mathrm{.}2(210310)$