Math question: Find the 3rd derivative of f(x) = sin(x) + e^x - ln(x), where f(x) is a function that involves trigonometric, exponential, and logarithmic functions.
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What is the length of side opposite to an angle, if the adjacent side has a length of 5 units and the angle measures 45 degrees?
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What is the value of arcsin(1/2) + arccos(1/2) + arctan(1) - arccsc(2) + arcsec(2)?