What is the formula to determine the length of an arc

The video tutorial explains how to label arcs on a unit circle by their endpoints and measure minor and major arcs. It covers the concept of arc measurement in degrees and how to calculate the length of an arc using the central angle. The tutorial also clarifies the difference between the degree of rotation and the actual distance of an arc.

How do you determine the measure of a major arc?

• Add 180 degrees to the minor arc

• Divide the minor arc by 2

• Subtract the minor arc from 360 degrees

• Double the minor arc

What is the degree measure of a semicircle?

• 360 degrees

• 270 degrees

• 180 degrees

• 90 degrees

What does the angle 'x' represent in the context of arc measurement?

• The radius of the circle

• The diameter of the circle

• The distance between two points

• The rotation of two radii in degrees

Which formula is used to calculate the length of an arc?

• x plus 2 pi r

• x times 2 pi r

• 2 pi r

• x divided by 2

Does the method to find the arc length change for minor, major, or semicircle arcs?

• It only changes for major arcs

• It only changes for semicircles

• No, it remains the same

• Yes, it changes for each type