In the diagram, ac is a diameter of the circle with center o. if m∠acb = 50°, solve for m∠bac.
a. 50°
b. 40°
c. 80°
d. 100°

it also supports my hypothesis. if you rest first you can squeeze the clothespin more times. from the data i collected the average of the eight people concluded exercise makes your muscles more fatigued and less able to squeeze the clothespin compared to resting before squeezing.