Determine the phase angles by which
u1(t) leads i1(t), where
u1(t) = 4sin(377t + 38°)V and i1(t) = 0.05cos(377t - 21°)A. Which of the following options correctly describes the relationship between the two waveforms?
A) V leads i by 38°
B) V leads i by 21°
C) V lags i by 38°
D) V lags i by 21°