Math question: In triangle ABC, if angle A is 70 degrees and the circle with center at A intersects AB and AC at points P and Q, respectively, calculate the measure of angle APQ.
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What is the period of the tangent function f(x) = tan x? Does f(x) have any asymptotes? Does the graph of f(x) intersect the x-axis?
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Find the roots of the cubic equation x^3 + 2x^2 - 5x + 6 = 0.