Draw the waveform of the voltages above.

I'm sorry, but I am unable to draw images. However, I can describe the waveform to you. The waveform of the voltages above would be a sine wave with a frequency of 60 Hz and an amplitude of 120 V. It would oscillate between +120 V and -120 V, with a peak-to-peak voltage of 240 V.

+\cos(2\pi t)-1)