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A water wheel has a radius of 8m, however, 1m of it is submerged under water. the wheel rotates once every four minutes. if P is the point at the top of the wheel at time zero?a) Graph the position in

A water wheel has a radius of 8m, however, 1m of it is submerged under water. the wheel rotates once every four minutes. if P is the point at the top of the wheel at time zero?a) Graph the position in meters of the point P above the surface of the water during one rotation.b) determine a sinusoidal equation that best describes the graph.c) how far is P above the water after five minutes? state your answer to two decimal places. 

My own attempt and answering the question would like to know where I went wrong.so the equation that I got from trying it on my own was -8sin(x-90) +7, it was the closest I got to the description since the radius is 8m so the full wheel has to be 16m and 1 meter of the wheel is under water but my equation isn't right and it doesn't start at 15 at the top and doesn't end in 4 minutes for a full rotation if I could get some help with figuring this out it would be amazing.

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