How to convert Cartiesian Form to Complex Form

How to Convert Cartesian Number to Complex Number?

First find the a and b in your cartesian number and just square both numbers and take the square root of sum. For angle take the tangent inverse of imag/real. 

How to convert complex number to real number?

Ans. Use the formulas given below. 

 Additional Information: Square root of any angle is half of orginal angle.