A moving particle that has the position function r(t) = (-t+sin(t), 1 - cos(t)) where r(t) is given in meters, and t is in seconds. How far has the particle moved during the first 9 second period? Show all your work. Show all your work, and leave your final answer in exact expression with a correct unit. Make sure to simplified all numerical parts. Double angle formulas: cos (20) = cos² 0 - sin² 0 = 1 - 2 sin² 0 = 2 cos² 0 - 1