Answer
2 rad
or
114.65 degrees
Work Step by Step
Given-
radius, r = 5 unit
arc, s = 10 unit
angle, $\theta$ = ?
We know that -
$\theta$ = $\frac{s}{r}$
= $ \frac{10}{5}$
= 2 rad
= $ 2 \times\frac{180}{\pi}$ degrees
= $ 2 \times\frac{180}{3.14}$ degrees
= 114.65 degrees