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December 18, 2014

Homework Help: Math - need help ASAP!! Please!

Posted by Anonymous on Sunday, November 4, 2007 at 7:31pm.

The question relates to application of sine functions.


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A carnival Ferris wheel with a radius of 7m makes one complete revolution every 16 seconds. The bottom of the wheel is 1.5m above the ground.

a) Draw a sketch to show a person's height (h) above the ground varies with time (t) for two revolutions, starting when the person gets onto the Ferris wheel at it lowest point.

b) Find the sine equation for the height (h) of the graph with respect to the time (t). (In radians)


--- Do I need to find the diameter for the circle in order to find the equation? And if I do, what do I do next? I don't know how to solve this problem, please help.



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Answers:

b) y = 7sin pi/8 (t-4) + 8.53

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