## Polar and Coordinate Forms of Complex Numbers - Argand Diagrams

A complex number z may take one of two forms:

Coordinate form:or polar form:

These are both illustrated on the Argand Diagram below.

Polar can be converted to coordinate form and vice versa.

Converting Polar to Coordinate Form

where 'Re' means 'the real part of' and 'Im' means 'the imaginary part of'.

Converting Coordinate to Polar Form