Tammy is at the dentist's office waiting on her appointment. she notices that the 6-inch-long minute hand is rotating around the clock and marking off time like degrees on a unit circle.

part 1: how many radians does the minute hand move from 1: 20 to 1: 55? (hint: find the number of degrees per minute first.)
part 2: how far does the tip of the minute hand travel during that time?
part 3: how many radians on the unit circle would the minute hand travel from 0° if it were to move 5π inches?
part 4: what is the coordinate point associated with this radian measure?