What is the central angle of an arc?

The central angle of an arc is the angle at the center of the circle between the two radii subtended by the arc. For the minor arc 𝐴 𝐷 , this is 3 3 ∘ . The measure of the arc is defined to be equal to this value.

How do you find the central angle of an arc?

A central angle is defined as the angle subtended by an arc at the center of a circle. The radius vectors form the arms of the angle. A central angle is calculated using the formula: Central Angle = Arc length(AB) / Radius(OA) = (s × 360°) / 2πr, where ‘s’ is arc length, and ‘r’ is radius of the circle.