Use the following information to answer the next two questions. A rider gets on a Ferris wheel at the lowest point of rotation and completes one full revolution in 3 minutes. The Ferris wheel has a diameter of 26 m and a rider gets on the wheel 2 m above ground. The height of a rider above the ground, y, in metres, can be modeled by the sinusoidal function where t is the elapsed time in minutes. 1. State the values of a and d in the function above.  2. The highest point of a rider above the ground can be found by calculating  a. d - a     b. d +a     c. d+b     d. d-b

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