Consider circle H with a 5 centimeter radius. If the length of major arc RT is 25/3π, what is the measure of ∠RST?A) 15° B) 25° C) 30° D) 45°

Given the major arc and the minor arc share the same chord, the the angle RST will be:
∠RST=1/2∠RHT
∠RHT=1/3π=1/3×180=60
hence
∠RST=1/2×60=30°

C] Answer: 30°