1. The problem statement, all variables and given/known data 2. Relevant equations P = IV 3. The attempt at a solution The solution is there and they did it by multiplying everything in the time domain. However, I decided to try to multiply the phasor forms to get the power but that did not work... V*I = sqrt(2)cos(377t) * sqrt(2)cos(377t+pi) = (sqrt2<0)(sqrt2<180) = 2<180 = 2cos(377t+pi) What is wrong with this?