How do university electricians do polar coordinate operations of complex numbers? When I learned this knowledge, I never learned it, and I couldn't understand it at all.
The university will learn. In fact, the X axis is the real axis and the Y axis is the imaginary axis. 8∠60 represents a point on this coordinate axis with a radius of 8 and an angle of 60 degrees counterclockwise with the X axis, and the real part of the corresponding value is 8*cos(60) and the imaginary part is 8*sin(60). Similarly,1∠ 90 =1* cos (90)+j * sin (90) = j.