- #1
Saladsamurai
- 3,020
- 7
Homework Statement
This one is a good one. This is in the section on cross products:
If A, B, and C are distinct vectors issuing from a common point, show that the vector [itex](\mathbf{A}\times\mathbf{B})+(\mathbf{B}\times\mathbf{C})+(\mathbf{C}\times\mathbf{A})[/itex] is perpendicular to the plane containing their heads.
Homework Equations
Definition of cross product
The Attempt at a Solution
I am jammed at the start. Can I get just a little hint here? Also, what exactly does it mean for vectors to be distinct? Does it just mean they are not equal to each other? Or that each is not zero?