Question: In a triangle, if the length of one side is 8 and the measure of an adjacent angle is 45 degrees, find the length of the side opposite to that angle using Sine Law.
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What is the derivative of the hyperbolic function f(x) = cosh(2x) + tanh(x) - sech(x)?
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Math question: What is the variance of the following data set: {2, 5, 7, 9, 10}?