Coastal areas experience tides which is where the ocean periodically gets to high and low points. Tides can be modeled with a sinusoidal (sine or cosine) function. At one beach, the high tide is 10 feet above mean sea level and the low tide is 10 feet below see level. The length of time between high and low tide is 5 hours. If high tide is at time t = Ohours, give the function H(t) that describes the height of the tide relative to sea level t hours after the high tide.

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