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Modulus of a Complex Number
Just as the absolute value of a real number measures the distance of that number from origin along the real number line, the modulus of a complex number measures the distance of that number from the origin in the complex plane. Observe that the length of the line from the origin along the radial line to z = x + iy is simply the hypotenuse of a right triangle, with one side of length x and the other side of length y
If z = x + iy, then the modulus of z, denoted by |z| , is defined by |z| = âˆš[x2 + y2]
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