Answer
$\text{We label the displacement vectors $\vec{A}, \vec{B},$ and $\vec{C}$ (and denote the result}$ $\text{ of their vector sum as $\vec{r}$ ). We choose east as the $\hat{i}$ direction }$$(+x \text { direction })$ $\text{and north as the $\hat{\mathrm{j}}$ direction (ty direction). All distances in kilometers.}$
$\text{The vector diagram representing the motion is shown below:}$
Work Step by Step
$\text{We label the displacement vectors $\vec{A}, \vec{B},$ and $\vec{C}$ (and denote the result}$ $\text{ of their vector sum as $\vec{r}$ ). We choose east as the $\hat{i}$ direction }$$(+x \text { direction })$ $\text{and north as the $\hat{\mathrm{j}}$ direction (ty direction). All distances in kilometers.}$
$\text{The vector diagram representing the motion is shown below:}$