Sorry again if this is a noobie post.
In R3, find the shortest distance between the lines:
l1 = x (2, -1, 3) + t(1, -1, 4)
l2 = x (1, 0, 1) + t(1, -1, 4)
Unless I am mistaken I would take vector 1 to be (1, -1, 4) and vector 2 to be (1, -1, 4) as well.
Using the equation distance = |P1P2 dot n| / ||n||
with n = cross product of vector 1 and vector 2
But when I do the cross product, I receive a value of 0.
Can anyone help steer me in the right direction.
I'm sorry if this is a trivial question, I have not taken math courses in a few years.
Thank you for your time.