What is the meaning of ph(z) in complex numbers?

[Fellowroot]

Exactly as stated in the title. What does ph(z) mean?

 

[Fellowroot]

Exactly as stated in the title. What does ph(z) mean?

I see that apparently its called phase and its related to angles, but I am missing the other details.

 

[Samy_A]

The argument of a complex number is also called the phase. Without more context, I don't see what more can be said.

http://mathworld.wolfram.com/ComplexNumber.html
http://mathworld.wolfram.com/Phasor.html