Angle and absolute value of complex numbers  Complex Numbers
Angle and absolute value of complex numbers
There are times when we are interested in obtaining a better understanding of the properties of a complex number, such as its argument and modulus. In this section, we will learn how to calculate the argument, also known as the angle, and the modulus, also known as the magnitude or the absolute value, of a complex number.
Basic concepts:
 Solving expressions using 454590 special right triangles
Related concepts:
 Magnitude of a vector
 Direction angle of a vector
Lessons
Notes:
Notes:
Magnitude = modulus = absolute value $z= \sqrt{a^2+b^2}$
Argument = angle $arg(z)=\theta$

1.
Given the complex number $z=2+3i$

2.
Given the complex number $w=5i3$