Expeditious conversion of complex numbers between the standard form and the polar form will facilitate your ability to perform ac circuit analysis with accuracy and speed. I recommend using a scientific calculator that can switch between the two representations with ease by use of the Polar->Rectangular and Rectangular->Polar functions. However, if you need to make the conversion "by hand" the following formulas govern the conversion process.
Last updated Sept. 30, 1998.
Copyright George Watson, Univ. of Delaware, 1998.