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If the chord PQ of the hyperbola x^2/a^2 - y^2/b^2 = 1 subtends a right angle at the centre C, then prove that 1/CP^2 + 1/CQ^2 = 1/a^2 - 1/b^2

If the chord PQ of the hyperbola x^2/a^2 - y^2/b^2 = 1 subtends a right angle at the centre C, then prove that 1/CP^2 + 1/CQ^2 = 1/a^2 - 1/b^2

Grade:12th pass

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