I have 3 points:

Question

P(-3, 1, 2), Q(-1, 2, 3), R(2, 1, 0)

and I need to find a nonzero vector orthogonal to the plane through these three points.

I seem to recall this having something to do with the cross product, so I mad vectors PQ <2,1,1> & PR <5,0,-2> calculated PQxPR and got the vector <0,9,-5>.

What do I do now?

Thank you in advance.

Answer 1

Your cross product vector (for PQ x PR), if done correctly, is a valid answer.

Any vector proportional to <0,9,-5> is aso a valid answer.