Question

find | z | , if z= i-2

Answer 1

Answer:

Given:

Z = -2 +i (standard form)

|z| = Modulus of complex number and is given by the

$|z| = \sqrt{ {x}^{2} + {y}^{2} } \: where \: x \: and \: y \: are \\ \: the \: coefficient \: of \: the \: complex \: number \:$

$z = - 2 + i \\ |z| = \sqrt{ {2}^{2} + {1}^{2} } \\ |z| = \sqrt{4 + 1} \\ \bold{|z| = \sqrt{5}}$

The modulus = √5