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Old 11-11-2007   #1
lfcboy
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Default Cosine word problem equation....sinusoidal word problem...please help!?

One complete push-up takes 3 seconds.The student starts the push-up at 20 inches and finishes the pushup at 3 inches. Write a cosine/sine equation(curve equation) modeling this. I am having a hard time finding the period. Can you please help me find the equation. It would be nice if you showed the steps also. Thanks!