- #1
zerojb34
- 8
- 0
Homework Statement
Find the equation of a sphere of radius 3 which is tangent to both the planes x-2y+2z=3 and 3x+4z=8
Homework Equations
The only eqn's I need are cross product and MAYBE the distance formula.
The Attempt at a Solution
Initially I shifted each normal vector by 3 units and took the cross product, but that just left me with the same answer as if I crossed the initial two normals.
I know that you have to do something with a 3 unit shift, but I'm honestly pretty lost.
Cheers.