The angle theta of the complex number is called the argument.
What is a complex number?
A complex number is characterized by an ordered pair of numbers, the real and imaginary parts. It can be represented in multiple ways such as Standard form(rectangular form), Polar form, Exponential form.
For the given situation,
The complex number z= r (cosθ + i sinθ).
The polar form of a complex number, z = a+bi is given by z = r (cosθ + i sinθ), where r is the magnitude of modulus of z and θ is the argument of z.
Hence we can conclude that the angle theta of the complex number is called the argument.
Learn more about complex number here
https://brainly.com/question/10073910
#SPJ2
