a) The highest tides in the world are found in the Bay of Fundy in Nova Scotia. The motion of these tides is simple harmonic motion, and so can be described by a sinusoidal function. At high tide the water is approximately 4 meters above sea level, and at low tide 4 meters below; the time between high tides is approximately 12 hours. Determine and graph an equation describing the motion of the tides. Assume that it is high tide at t = 0 hours

b) How many meters does the tide in Bay of Fundy drop 1 hour after high tide?