To see why this is true lets argue in two ways. Now that weve derived the arc length formula lets work some examples. The arc length has a different formula which means it can be calculated in different ways.
When the central angle is measured in degrees the arc length formula is.
Therefore if you divide an arcs degree measure by 360 you find the fraction of the circles circumference that the arc makes up. Arc length formula is used to calculate the measure of the distance along the curved line making. A circle is 360 all the way around. Now that weve derived the arc length formula lets work some examples.