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    How to find the modulus and argument of a complex number?

    Ravindra Pindel 12th Feb, 2021
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    Ravindra Pindel 12th Feb, 2021

    To find the modulus and argument of a complex number z=x+i y :
    - Modulus is the distance from the origin:

    |z|=\sqrt{x^2+y^2}

    - Argument is the angle $\theta$ made with the positive real axis:

    \arg (z)=\tan ^{-1}\left(\frac{y}{x}\right)
    The modulus shows the length, and the argument shows the direction of the complex number on the Argand Plane.

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