Hi this isn't homework, just a practice problem I already have the answer too for my waves class:(adsbygoogle = window.adsbygoogle || []).push({});

z=sin(wt)+cos(wt)

Express this in the from Z=Re[Ae^{j(wt+[tex]\alpha[/tex])}]

I know how to express sine in the form of cosine, and cosine in the from of a complex exponential, but I don't know how to do this...I need to find the amplitude and [tex]\alpha[/tex]. Can someone help?

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

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: Complex Numbers and amplitude

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