Determine the amplitude A and the phase angle y (in radians), and express the displacement in the form æ(t) = A cos(wt – 7), with z in meters. z(t) = meters help (formulas) With what initial displacement y(0) and initial velocity z'(0) was the system set into motion? z(0) = meters help (numbers) z'(0) = meters / second help (numbers)
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