Rotation of the Co-ordinate axis

Hey guys
i now this might be a bit of a higher level than most questions on here but ill give it a shot anyway.

Can any one explain to me anything about rotation of the coordinate axis in geometry.

Its first semester of degree maths and im kinda struggling with this to be honest

cheers guys.

First semester of degree maths? I have no idea what that is. XD But! I know a bunch of weird math skills, so I can possibly help you.

Are you at the linear algebra level or the geometry level? Or is this more of the quantum mechanics level and you're dealing with rigid rotors? I can probably help you, but you need to tell me what your level is!

Also! Do you know much (or anything) about trigonometry and matrices and orthogonality? Or is it just basic stuff?

Reply soon!