An arc of length 15ft subtends a central angle 0 in a circle of radios 9ft. Find measure of 0 in degrees and radians.

95.49°

Step-by-step explanation:

The arc length formula is s = rФ, where r is the radius and Ф is the central angle in radians.  Here, r = 9 ft and s = 15 ft.  Thus, the central angle Ф is

Ф = (15 ft) / (9 ft) = 5/3 radians, or

5 rad       180°

* = 95.49°

      3       π rad