## Precalculus (10th Edition)

$88.69^\circ.$
We know that $1\text{mile}=5280$ft, hence $5\text{miles}=5\cdot5280\text{ft}=26400$ft. By the text of the exercise $\tan{(\theta)}=\frac{26400}{600}=44.$ Hence $\theta=\tan^{-1}{(44)}=88.69^\circ.$