Question: The equation f(x) = cos(x) describes a cosine function. Find the amplitude, period, and range of this function. How many x-intercepts does it have?
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What is the area of a triangle with side lengths 5, 12, and 13 using Heron's Formula?
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What is the measure of an angle formed by two intersecting lines, if the sum of its adjacent angles is 120 degrees?