5Question: Find the vector $\mathbf{v}$ such that $\mathbf{v} \times \mathbf{a} = \mathbf{b}$ and $\mathbf{v} \cdot \mathbf{a} = 0$, where $\mathbf{a} = \langle 1, 2, 3 \rangle$ and $\mathbf{b} = \langle 4, 5, 6 \rangle$.