What is the area of a triangle with side lengths of 4, 7, and 9?
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Question: What is the period of the trigonometric function f(x) = 2sin(3x) + cos(4x) - tan(2x)?
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What are the properties of the hyperbola given its equation as 2x^2/25 - 2y^2/16 = 1? Provide the center, vertices, foci, asymptotes, and eccentricity.