For a=⟨1,2,2⟩\mathbf{a} = \langle 1, 2, 2 \ranglea=⟨1,2,2⟩, find a unit vector in the same direction.
⟨13,23,23⟩\langle \frac{1}{3}, \frac{2}{3}, \frac{2}{3} \rangle⟨31,32,32⟩
⟨15,25,25⟩\langle \frac{1}{5}, \frac{2}{5}, \frac{2}{5} \rangle⟨51,52,52⟩
⟨15,25,25⟩\langle \frac{1}{\sqrt{5}}, \frac{2}{\sqrt{5}}, \frac{2}{\sqrt{5}} \rangle⟨51,52,52⟩
⟨1,2,2⟩\langle 1, 2, 2 \rangle⟨1,2,2⟩