Hi,
i have three points A',B',C' and want to find a vector passing through B' and parallel to the other two points in the plane containing these 3 points.
So this how i started,
A'=(9,27,-0.6)
B'=(12,27,-6)
C'=(19,25,-8)
I found the vector AB' and AC' first.
A'B'= A'-B'
A'C'=A'-C'...