## Precalculus (6th Edition) Blitzer

$2radians,114.59^{\circ}$
We know that $\theta=\frac{s}{r}$ We plug in the known values to obtain: $\theta=\frac{8000}{4000}=2radians$ Now we can convert this angle into degrees as $\theta=2\times \frac{180^{\circ}}{\pi}=114.59^{\circ}$