Hi There.(adsbygoogle = window.adsbygoogle || []).push({});

I was given this question and the answer:

Find the polar forms of [tex]1/z[/tex] where z = [tex]\sqrt{}3[/tex] + i

and [tex]1/z[/tex] where z = 4[tex]\sqrt{}3[/tex] -4i

Answers respectively are:

[tex]1/2[/tex] cis([tex]-\pi/6[/tex])

[tex]1/8[/tex] cis([tex]\pi/6[/tex])

Can someone please explain to me why it is that the sign of the argument changes in the answer from + to -, for the first question, and - to +, for the second question?

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Finding polar form of 1/Z

**Physics Forums | Science Articles, Homework Help, Discussion**