1. The problem statement, all variables and given/known data C= B|A| + A|B| D= A|B|-B|A| C and D are orthogonal Find a third vector perpendicular to both C and D 2. Relevant equations [AxB] = |A||B|sin(theta) 3. The attempt at a solution I know that to find the answer I need to find the cross product of C and D. I have done similar problems, but the unit components (i,j,k) have always been given. I can't figure out a way to do this without having those. Thanks for any help, even a hint!