** I accidentally posted this in the pre-calc math section first, but I think it's more applicable here...sorry**(adsbygoogle = window.adsbygoogle || []).push({});

1. The problem statement, all variables and given/known data

I need to find the intersection point of two vectors.

For vector A, I have it's start point (0,0,0) and it's magnitude in components (-.41, .28, -.08).

For vector B, I only know it's start point (-2.70, -.45, -.21)

I also know that the angle between the two vectors is 38.3 degrees.

I know this system has a unique solution, but I am having trouble arriving there mathematically.

2. Relevant equations

I am guessing I need to use some combination of AB=|A||B|cos(theta) and setting the equations of the lines equal... but haven't had any success yet.

3. The attempt at a solution

Like I said, I've tried writing equations for the two vectors and solving for them equal to each other, as well as a geometric approach.

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# Homework Help: Intersection of 2 vectors in 3D, knowing the angle between them

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