Question

in the diagram, θ is measured in radians. which equation represents the relationship between the radius, r, and arc - length, s? r = θ·s s = θ·r r = θ + s s = θ + r

Explanation:

Step1: Recall arc - length formula

The formula for the arc - length $s$ of a circle when the central angle $\theta$ is measured in radians is $s = r\theta$, where $r$ is the radius of the circle and $\theta$ is the central angle in radians.

Answer:

$s=\theta\cdot r$