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Mathematics 13 Online
OpenStudy (anonymous):

I have to search the web and come up with two real life SIN functions. I can't use ferris-wheel or tempurature... I know I could do heart rate and like a bicycle wheel.. but I don't know the equations for them?

OpenStudy (abb0t):

there's a field in engineering -signal processing that is based on using sums of sines and cosines. that's a start.,

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