WHAT IS ARGAND DIAGRAM?

Argand diagram

Cartesian coordinate system consisting of two perpendicular axes for graphing complex numbers, the real part of a number being plotted along the horizontal axis and the imaginary part along the vertical axis.

Argand Diagram is named after Jean-Robert Argand  (1768–1822), a Swiss mathematician.

The important term in Complex Number is also Modulus,|z| or R and Argument, θ. Next video is showing the steps to calculate and obtain the value of R and θ for a complex number.