What is the tangent of an angle in a right triangle if the opposite side measures 6 units and the adjacent side measures 9 units?
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What is (2 + 3i)(4 - 5i) + (1 + i)² - (6i)³ + 3/2i - 4?
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Math question: For the linear function f(x) = x, if x represents the number of hours studied and f(x) represents the corresponding test score, how many points would a student score if they studied for 5 hours?