A 15-centimeter pendulum moves according to the equation = 0.2 cos 8t, where is the

Question:

A 15-centimeter pendulum moves according to the equation θ = 0.2 cos 8t, where θ is the angular displacement from the vertical in radians and t is the time in seconds. Determine the maximum angular displacement and the rate of change of θ when t = 3 seconds.

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