Question: The harmonic motion function d(t) = 5cos(2 t ), in which d is measured in centimeters and t is measured in seconds, gives the distance

The harmonic motion functiond(t)= 5cos(2t), in whichdis measured in centimeters andtis measured in seconds, gives the distance a swinging pendulum is from its resting position at timet. How far was the pendulum from its resting position when the motion began? What is the period of the pendulum's motion? How far is the pendulum from its resting position after 7.5 seconds?

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