Question

How do you find `abs( 7 – 2i )`?

Answer 1

`abs(7-2i)=color(green)(sqrt(53))`

Explanation:

The absolute value of a (complex) number is its distance from the origin.

This can be easily calculated using the Pythagorean Theorem:

`color(white)("XX")abs(7-2i)=sqrt(7^2+(-2)^2) = sqrt(49+4) =sqrt(53)`