## Saturday, May 20, 2006

### Argand Diagram

An Argand Diagram is a way of visualizing complex numbers. It involves graphing a complex number to the Cartesian coordinates.

There are two ways to represent a complex number:

x + iy

r (cos φ + i sin φ)

Both of these ways are equivalent since:

Here is the Argand Diagram:

One important point to remember is that in the r (cos φ + i sin φ) form, all values can be positive since r is an absolute magnitude and φ is a value between 0 and using radians (or in degrees, between 0 and 360).

References