Converting to Polar Coordinates
Polar Coordinates: $ Z=M\angle\theta $
$ M=\sqrt{a^{2}+b^{2}} $
$ \theta=tan^{-1}\Big(\frac{b}{a}\Big) $
Converting to Rectangular Coordinates
Rectangular Coordinates: $ Z=a+bj $
$ a=M\cos \theta $
$ b=M\sin \theta $
$ Z=a+bj=M\cos\theta+jM\sin\theta $