I have two cartesian coordinates. There are xyz and BİG XYZ. I want to make these are paralel each other.forexample , x paralel to X ,y paralel to Y and z paralel to Z. I use rotation matris but I have a lot of different rotation matris . for example I have 3D point in xyz cartesien coordinates and its called A. and I want to change cartesien coordinate to BİG XYZ and find the same 3D point in this coordinates its called B.Until now it is okay. But when I used different rotatıonal matris , points were changed.what can I do? Which Euler rotations can ı use?