Question

A circle has a radius of 19 ft. Find the radian measure of the central angle that intercepts an arc of length 9 ft.
Do not round any intermediate computations, and round your answer to the nearest tenth.

Answer 1

Answer:

$\alpha = \frac 9{19} \approx 0.5$

Step-by-step explanation:

The measure in radians of an angle is defined as the ratio between the arc length and the radius of the circle.

In our case $\alpha = \frac lr = \frac9{19} \approx 0.5$