1. The problem statement, all variables and given/known data Vector A + Vector B + Vector C = 0 A=B+C 2. Relevant equations Find the angle between vector A and vector B 3. The attempt at a solution I tried to solve this problem by resolving all the vectors and individually equating the value of vectors at each axes x, y and z to 0 but got nowhere with it. Please give a hint instead of solving the entire question.