Can anyone help me with a complex calculus concept? I took this class years ago and cannot remember how to simplify something like [tex]\left|cos(1+2i)\right|[/tex]^2?(adsbygoogle = window.adsbygoogle || []).push({});

Thanks!

Michael

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

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

# Homework Help: I have forgotten my complex calculus!

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