Leiman Petr wrote:
Every other week this question comes up!
This is Geometry 101 or beginner's geometry!!!
http://www.euclideanspace.com/maths/algebra/vectors/angleBetween/index.htm
I am not sure if it possible to understand _anything_ in crystallography if it is not clear how to calculate an angle between two vectors!
Honestly,
Pet
I don't think many job interviews for crystallographers these days
include a question on how to calculate the angle between two vectors.
Sure a background in math, physics, or computation is a valuable asset,
but it is no longer essential as it was 2-3 decades ago.
Crystallographers may have dumbed down in the math department but they
have smartened up in other areas.
Bart