We are doing complex numbers, polar coordinates, Euler's formula etc in class and there is this thing called the Argument (Arg) function. I am having trouble understanding what this is. This is a new concept and sadly my notes aren't much help. So could someone kindly answer the following questions.(adsbygoogle = window.adsbygoogle || []).push({});

what is this function?

How do I evaluate it?

Where is it used?

Are there any properties of this function I should know about?

Anything for further reading is also appreciated but keep in mind that this is the first I am seeing all this stuff. No wikipedia please because math on wikipedia doesn't make sense to me with all those complicated equations and symbols that I have never seen before.

Here is a sample question from my assignment just to make sure I am getting my message across properly. Feel free to use it as an example if you want.

z_{1}= [itex]\pi[/itex]/8

z_{2}= 3[itex]\pi[/itex]/4

find Arg (z_{1}z_{2})

Answer is 7[itex]\pi[/itex]/8

which just seems like simple addition so why go through all this trouble with Arg?

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

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

# The Arg function

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