This question is really pissing me off because I don't understand it. I know how to do it but don't understand the reasoning:(adsbygoogle = window.adsbygoogle || []).push({});

Find an equation of the line through the point (4,5,5) that meets the line

(x-11)/3=(y+8)/-1=(z-4)/1 at right angles.

I found out that you have to do the dot product of (4,5,5) and that equation but I don't understand why you don't need the direction vector for the other equation to find the answer. Also why couldn't you just do (4,5,5) dot (11,-8,4)?????????

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# Equation of a Line in three space question

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