The Rotation Matrix

NB: please use any attachments at your own risk.

I have been working on producing an original proof , of the form of a matrix , which can be used to represent an arbitrary reorientation in space , of a rigid body.

Knowing about such a matrix might be useful to people who use WebGL to represent rotations of objects.

N.B. such a matrix is useful in science.

The math involved in the proof , is of a type you might meet in applying 'Group Theory' in 'Theoretical Chemistry'.