What is the equation of an ellipse with foci at (0,±c), major axis length 2a, and center at the origin?
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What are the characteristics of the reciprocal/rational function f(x) = 1/x in terms of asymptotes, domain, range, and symmetry?
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Question: In triangle ABC, the measure of angle A is 60 degrees. The angle bisector of angle A intersects side BC at point D. If the measure of angle DAC is 30 degrees, what is the measure of angle B?