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How do you find $abs( 3 - 7i )$ ?

1 Answer

A. S. Adikesavan

Apr 7, 2016

$sqrt58$

Explanation:

$|x+iy|=sqrt(x^2+y^2)$
Here, x=3 and $y=-9$
$sqrt(3^2+(-7)^2)=sqrt58$ .

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