What is the period of the cosine function f(x) = cos(x)? Provide your answer in terms of π.
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Question: What is the area of a triangle with side lengths 8, 15, and 17 using Heron's Formula?
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What is the resultant displacement when two vectors with magnitudes 4.5 units and 3.2 units, at angles 60° and 120° respectively, are added/subtracted?