How to find Arg and arg on calc?

[saifh]

I was wondering how I can find Arg and arg on my ti nspire CAS?

For example:

z = 4cis(5π/6)

Find Arg(z^7)

[e^1]

To type the polar form of the complex number on your CAS, do so in the form 

To get the principle argument of the complex number, you can go to Menu > Number > Complex Number Tools > Polar Angle. Similarly you can type .

[saifh]

To type the polar form of the complex number on your CAS, type it in the form 

To get the principle argument of the complex number, you can go to Menu > Number > Complex Number Tools > Polar Angle. Similarly you can type .

This helps a lot, thanks!

[lzxnl]

Alternatively, you can just take the natural log of the complex number and the imaginary part of this will be your argument.