- #1

kathrynag

- 598

- 0

## Homework Statement

Reduce to x+iy

[tex]\frac{1+z}{1-z}[/tex] where z=cos[tex]\theta[/tex]+isin[tex]\theta[/tex].

## Homework Equations

## The Attempt at a Solution

[tex]\frac{1+z}{1-z}[/tex]

Multiply by conjugate

[tex]\frac{1+2z+z^{2}}{1-z^{2}}[/tex]

When I plug in the z value nothing seems to cancel out.