Assignment:
In a baby's room, a toy is suspended from a bar that hangs over the baby's crib. When the baby pulls and releases the toy, it begins to bob up and down so that the distance between the toy and the bar oscillates in a sinusodial fashion. Let d(t) be the toy's distance from the overchanging bar, measured in centimeters, after t seconds. The equation of d(t) is shown below.
Equation: y=6cos(pi/2)x+10
Find all times in the first 4 seconds for which the toy is 8 centimeters from the bar.(Round your answer to the nearest hundredth).
Provide complete and step by step solution for the question and show calculations and use formulas.