1. The problem statement, all variables and given/known data Hello everyone, I am having difficulty with something that should be very basic knowledge for most engineers here. I cannot see how this trigonometric relationship is being made from the phasor diagram I attached... I remember the SohCahToa rule, but it's just not working here for me. Please if anyone can explain how these two equations were set up and how I can analyze the phasor diagram to see how.. it would be very much appreciated. Thank you in advance.