- #1
gundamshadow
- 7
- 0
Homework Statement
Two coplanar lines, a and b are perpendicular to each other. a passes through the points (3,2,3) and (8,10,6). Find the equation for b if it passes through the point (7,49,25).
Homework Equations
The equation were trying to find is r = [x,y,z] + s [x1,y1,z1] + t [x2,y2,z2]
The Attempt at a Solution
Basically since the coordinates are perpendicular I used the cross product to find one direction vector. For my position vector I used (3,2,3). Now I'm not sure what to do with the last point (7,49,25) or what to do to find my second direction vector. I'm not even sure if I did the first part right. Help would be appreciated thanks!