## Precalculus (6th Edition) Blitzer

$280^{\circ}$
Since, radians = $\dfrac{14 \pi}{9 }$ In order to find the result, we need to change radians into degrees by multiplying the given angle by $\dfrac{180}{\pi}$. $\dfrac{14 \pi}{9 } \times \dfrac{180}{\pi}=280^{\circ}$