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Circadian rhythms are the daily fluctuations in bodily functions driven by the light/dark cycle of the Earth, including variations in body temperature. Suppose human body temperature reaches its lowest value of 365 .C at Gam, and its highest value of 37 5 *C at 6pm. (n) Construct a sinusoidal function B(f) that models human body temperature in "C at time f, where f is measured in hours and r = 0 corresponds to 12am (midnight). (b) According to this model, What is the body temperature at 4pm? (c) When is the first time after 12am that the body temperature reaches 36.75 "C