Find the average power loss and power factor for each of the circuits whose input current and voltage are as follows:

a$.v=60sin(t+30)$

$i=15sin(t+60)$

b$.v=-50sin(t-20)$

$i=-2sin(t-20)$

c$.v=50sin(t+80)$

$i=3cos(t-20)$

d$.v=75sin(t-5)$

$i=0\mathrm{.}08sin(t+35)$