Physics

Problem

Two alternating voltages have identical peak value

240\,\text{V}

and the same frequency. At

t=0

, the first voltage is zero and increasing positively, while the second is

+168\,\text{V}

. Approximately how many degrees does the second voltage lead the first? a)

30^{\circ}

60^{\circ}

44^{\circ}

90^{\circ}