Question: A biochemistry technician measures the angle between two molecular bonds modeled as vectors $\mathbfa = \beginpmatrix 1 \\ 0 \\ 1 \endpmatrix$ and $\mathbfb = \beginpmatrix 0 \\ 1 \\ 1 \endpmatrix$. Compute $\cos\theta$ where $\theta$ is the angle between them. - Crosslake