How do you find $abs(12-16i)$ ?

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Answer 1 · 2016-06-17T01:30:43

$abs(12-16i)=color(green)(20)$

The absolute value of a complex number is its distance from the origin (which can be calculated using the Pythagorean Theorem).

$abs(12-16i)=sqrt(12^2+(-16)^2)=sqrt(122+256)=sqrt(400)=20$

How do you find abs(12-16i)abs(12-16i)?