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OpenStudy (anonymous):
The blades on a model windmill take 4 seconds to make a full rotation. At the lowest point, the tip of the blade is 0.5 m off the ground, and at the highest point the tip of the blade is 2.5 m off the ground. Determine an algebraic equation relating the height (h) in metres of the tip of the blade above the ground at time (t) in seconds I have f(x) = 1.25(sin(pi/2(x-0))+3.75
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