Question: The angles of two triangles are given by ∠A = 30°, ∠B = 50°, and ∠C = 100°. If ∆ABC is congruent to ∆XYZ, what are all the possible side lengths in these triangles?
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What is the value of sin(45°) + 2cos(60°) / tan(30°) - cot(45°)?
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What is the sine value of an angle with a period of 90 degrees?