(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Reduce to x+iy

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

2. Relevant equations

3. 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.

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# Homework Help: Reduce to x+iy

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