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If the distance from point P to the right focus on the hyperbola x213-y212 = 1 is equal to 13, then the distance from point P to the right collimator is () A. 135B. 13C. 5D. 513
According to the meaning of the question, a = 13, C = 5, e = 51313, the distance from point P to the left focus = 213-13 = 13, let the distance from point P to the right directrix be x, from the second definition of hyperbola, we can know that 13X = 51313, the solution is x = 135; so we choose a
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