Find the Unit Vector Having the Same Direction as V $$v = - 12 i + 5 j$$

Multiple Choice

Find the unit vector having the same direction as v.
- $$v = - 12 i + 5 j$$

A) $\mathbf { u } = - \frac { 12 } { 13 } \mathbf { i } + \frac { 5 } { 13 } \mathrm { j }$
B) $\mathbf { u } = - \frac { 13 } { 12 } \mathbf { i } + \frac { 13 } { 5 } \mathbf { j }$
C) $u = - \frac { 5 } { 13 } \mathrm { i } + \frac { 12 } { 13 } \mathrm { j }$
D) $\mathbf { u } = - 156 \mathbf { i } + 65 \mathrm { j }$