In triangle XYZXYZXYZ, XY⃗=−2i+6j+3k\vec{XY} = -2\mathbf{i} + 6\mathbf{j} + 3\mathbf{k}XY=−2i+6j+3k, XZ⃗=5i+2j−k\vec{XZ} = 5\mathbf{i} + 2\mathbf{j} - \mathbf{k}XZ=5i+2j−k
Find the vector YZ⃗\vec{YZ}YZ
Find the length of the line XYXYXY
