try as an example

z = 1 + i

I would, if I had any idea what could be done with it. []

Find the magnitude. That's done by using the expression

[tex]e^{i\theta} = cos \theta + i sin \theta[/tex]

Then any complex number

*C* can be represented as

[tex]C = Ae^{i\theta} = A(cos \theta + isin \theta) = x + iy[/tex]

where

[tex]x = A cos \theta[/tex]

[tex]y = A sin \theta[/tex]

The magnitude of

*C* is defined by

[tex]|C| = \sqrt{x^2 + y^2}[/tex]