1. The problem statement, all variables and given/known data I cannot find other sources to help me with this problem set, I have A B and C vectors defined by: A (2,1,1) B(1,-1,0), C(-1,1,-1) From these I have a list of questions and some I am stuck on are:each of these are vectors with an arrow above it 1. |A| + |B| this I did as √ax^2 +ay^2 +az^2 + √the same for B 2. |A + B| but how do i do this, what is the difference between these? 3. A + B 4. 3C 5. A dot (B X C) 8. What is the angle between A and B, A and C, and B and C? in radians use pi id appreciate any help!!