A 80.0 Hz generator with an rms voltage of 150 V is connected in series to a 3.20 k ohm resistor and a 3.50 micro farad capacitor. Find the phase angle between the current and the voltage. I'm getting cos^-1 (1) which will equal to zero degree, but this answer is wrong in mastering physics. I'm getting Z= 3.2 k ohm.