Complex S = V x I*.
V = A sin( Wt + beta) ; I = B sin(Wt + phi) ; Theta = (Beta - Phi)
S = (A angle_beta) x (B angle_phi*)
Beta > Phi = we will get an positive reactance of j (positive Theta)
Phi > Beta = we will get an negative reactance of j. (negative (Theta)
Looking at the power...
