1. The problem statement, all variables and given/known data Let's say I have (1) 6<-9 and (2) 6<189 I don't have a problem drawing the phasors out, however, I am having a bit of difficulty determining how to 'read' the diagram and tell how one leads/lags the other. In the example I've given, I draw out the phasors but when it comes to determining which one lags the other I am a bit confused. I can easily find the phase difference (351 - 189 = 162 deg). Is there a way I can visually inspect each diagram to determine which one leads and which one lags?