Question

What is modulus $z$?

Answer 1

Modulus:

Modulus of a complex number is the distance of the complex point on the argand plane from the origin.

The modulus of a complex number $z=x+iy$ is the square root of the sum of squares of real and imaginary parts. It is denoted by $\left|z\right|$.

Formula: $\left|z\right|=\sqrt{x^2+y^2}$