Converting from Polar Form to Rectangular Form. Either method of notation is valid for complex numbers. Rectangular form lending itself to addition and subtraction, and polar form lending itself to multiplication and division.
Hence polar form of a complex number is another way to represent a complex number. The form z = a + b i is called the rectangular coordinate form of a complex number.
This representation is very useful when we multiply or divide complex numbers. Therefore argand diagram use to represent Polar form.
Converting from Polar Form to Rectangular Form of complex no.
complex no.-2