What rule of congruence states that if two sides of a triangle are congruent and the included angles are congruent, then the triangles are congruent?
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What is the amplitude, period, and range of the cosine function \(f(x) = \cos(x)\)? Also, find the x-intercepts and the coordinates of the maximum and minimum points.
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What is the resultant displacement when a vector of magnitude 5 units is added to another vector of magnitude 8 units in the opposite direction?