What is the result of adding vector A (6, -3) and vector B (-2, 7)?
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What is the equation of an ellipse with a center at (0,0), major axis length 6, and minor axis length 4?
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What is the length of an unknown side of a triangle, using the sine law, if the angle measures 30 degrees, the side opposite the angle has length 5, and the sine of another angle is 0.5?