Question

find amplitude of a complex number z=-i​

Answer 1

Answer:

|z| =1

Step-by-step explanation:

amplitude of z = x +iy=

$\sqrt{ {x}^{2} + {y}^{2} }$

in this case x=0 and y= -1

|z|=

$\sqrt{ {0}^{2} + {( - 1)}^{2} }$

=1