# Math Help - Lines in a plane 2

1. ## [solved]Lines in a plane 2

Find the distance between l1 and l2:

l1: r=(6,-4,0)+t(0,-1,1); l2: r=(0,5,3)+s(-2,0,1)

Can someone just check or verify if my answer is correct?

PQ=(-6,9,3)
n=(-1,-2,-2)
|n|=3

D=(-6,9,3) . (-1,-2,-2)
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3
$D = \frac{|PQ.n|}{||n||}$