If ∥a×b∥=0\|\mathbf{a} \times \mathbf{b}\| = 0∥a×b∥=0 for non-zero vectors a\mathbf{a}a and b\mathbf{b}b, what does this mean geometrically?
The vectors are orthogonal
The vectors are parallel
The vectors have the same magnitude
The vectors form a right angle