- #1
Saladsamurai
- 3,020
- 7
Homework Statement
Show that the product of two Orthogonal Matrices of same size is an Orthogonal matrix.
I am a little lost as to how to start this one.
If A is some nxn orthogonal matrix, than [itex]AA^T=A^TA=I[/itex] where I is the nxn identity matrix.
So now what? Let's take A and B to be nxn orthogonal matrices.
Can I get a push in the right direction