In the circle shown below, chords TR and QS intersect at P, which is the center of the circle, and the measure of angle PST is 30 degrees. What is the degree measure of minor arc RS?

Question

The answer is 60 degrees, but I don’t understand how it’s not 30 degrees.

Answer 1

Draw and label a diagram.

∠PST = 30º

arc TQ = 60º

∠TPQ = 60º

∠SPR = 60º

arc SR = 60º