Question
If $|\mathbf{a} \times \mathbf{b}|^2+|\mathbf{a} \cdot \mathbf{b}|^2=36$ and $|\mathbf{a}|=3$, then $|\mathbf{a}|$ is equal to
If $|\mathbf{a} \times \mathbf{b}|^2+|\mathbf{a} \cdot \mathbf{b}|^2=36$ and $|\mathbf{a}|=3$, then $|\mathbf{a}|$ is equal to