Hi everyone.
I've got this question about finding the plane equation that goes through:
A=(-1,2,0) B=(1,2,0) C=(0,3,-1)
So shall i use the cross product as ABxAC or CAxCB as C is perpendicular to A and B?
Thank you
As Adarsh said, both cross products will give the same plane-$\displaystyle \vec{u}\times\vec{v}= -\vec{v}\times\vec{u}$- they are vectors pointing in opposite directions and so perpendicular to the same plane.
But please don't say "C is perpendicular to A and B". A, B, and C are points, not lines or vectors and so are not perpendicular to anything.