What is the arc length of a sector and how do you find it

The video tutorial explains how to find the arc length of a sector using radians. It begins by defining a sector and radians, then describes how to measure angles in radians. The tutorial demonstrates how to calculate arc length by breaking down angles into fractions of π and using the formula S = radius × theta. The video emphasizes understanding the relationship between radians, angles, and arc length, providing a clear method to solve for missing terms using the formula.

What formula can be used to calculate the arc length of a sector?

How does the angle measure relate to the arc length when the radius is 1?