Math question: What is the amplitude of the cosine function f(x) = cos x?
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What is the equation of a hyperbola with a center at (2, -3), a vertical transverse axis of length 8, and a distance of 6 units from the center to the vertices?
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What is the area of a hyperbolic sector defined by the equation y = cosh(x) from x = 0 to x = 2