Use the Definition $\theta = \frac { s } { r }$

Multiple Choice

Use the definition $\theta = \frac { s } { r }$ to determine the radian measure of the angle in the figure below.

A) $\theta = 0.2$ radians
B) $\theta = 0.4$ radians
C) $\theta = 1.25$ radians
D) $\theta = 0.83$ radians
E) $\theta = 0.13$ radians