The water depth in a harbor rises and falls over time. The function f(t) = models the water depth, in feet, after t hours.During the first 24 hours, at what times does the water depth reach a maximum?

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at 5 and 17 hours

General Form of Sine and Cosine

The water depth in a harbor rises and falls over time. The function f(t) = models the water depth, in feet, after t hours.During the first 24 hours, at what times does the water depth reach a maximum?

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