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OpenStudy (anonymous):
the saint louis arch can be approximated by using a function of the form y= b - a cosh(x/a). placing the origin at ground level in the center of the arch and the y axis upward, find an approximate equation for the arch given that its height is 615ft and its base span is 530ft. in other words, find a and b
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OpenStudy (anonymous):
so i plugged in 615ft and 530 ft: 615= b - a cosh(530/a) now not sure how to find a and b
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