When writing complex numbers, there are several different forms you can write them in.
Rectangular Form:
Polar Form:
z=r*(cos()+i*sin(
))
To convert:
Example: Convert
=
=
=
= 7.81
Since -5 < 0, we will use the second formula for calculating theta:
=
+
=
+
= 2.27
So the polar form is