Functions Quiz
Question:

Steven Valchuis is doing some mad clubbin’ when he falls off the pier and into the ocean. As he sits drifting in the ocean he notices that throughout the day the depth of the water changes with the tides. From when he fell in at midnight until he was rescued at 10 AM, this is the depth that he found the water to be.

Time 4 AM 6 AM 8 AM 10 AM 12 PM 2 PM 4 PM
Depth in Ft. 2.55 3.8 4.4 3.8 2.55 1.8 2.27

Find the sine and cosine curves that fit this data.

Show the solution.
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