You can put this solution on YOUR website! Use the Argand plane where multiplication
is done by multiplying amplitudes and adding
angles of the rotating vectors = angle 30 degrees angle 30 degrees = angle 30 degrees = angle 90 degrees angle 90 degrees = angle degrees angle 90 degrees = angle 90 degrees
It is best to draw this. The advantage is that the exponent could
be any size and you just add angles and raise 1 number to a power