Modeling with periodic functions. A Ferris wheel is 40 meters in diameter and boarded from a platform that is 1 meters above the ground. The six o'clock position on the Ferris wheel is level with the loading platform. The wheel completes 1 full revolution in 6 minutes. A model for this situation can be represented by the function h(t) = - 20 cos + 21 . How many minutes of the ride are spent higher than 24 meters above the ground? Note: If your calculated answer is a decimal, give no more than 2 decimal places in your answer. minutes

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Q: Part D

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