Find vector orthogonal to plane through these points P, Q and R.
P(1, 0, 0)
Q(0, 2, 0)
R(0,0,3)
then find the area of the triangle PQR.
i tried using cross product of:
|1 0 0|
|0 2 0|
|0 0 3|
i got 1*(6-0) - 0(0-0) + 0(0-0)
...thats not correct because it should be <6, 3, 2>
i'm not sure i set this up correctly, haven't really tried a cross product with three points, usually just two.
then need the area of triangle.
thanks for any help here.