Answer:
A. Intercepted arc.
Step-by-step explanation:
From Geometry we know that arc ([tex]s[/tex]), dimensionless, is measured by the following equation:
[tex]s = \theta \cdot r[/tex] (1)
Where:
[tex]\theta[/tex] - Central angle, measured in radians.
[tex]r[/tex] - Radius, dimensionless.
If the circle has a radius of 1. Then, we notice that arc is directly proportional to the central angle. Hence, the right answer is A.
