Homework Statement
If a,b and c are the x-,y-, and z-intercepts of a plane, respectively, and d is the distance from the origin to the plane show that:
1/d2=1/a2+1/b2+1/c2
Homework Equations
distance from a point to a plane: [tex]
d=|Ax0 + By0 + Cz0 +D|/√a2+b2+c2
The Attempt...