1.

The radius of the circle whose centre is (–7, 0) and which cuts the parabola y2=8x at A and B such that its common chord AB subtends a right angle at the vertex of the parabola is

Answer»

The radius of the circle whose centre is (–7, 0) and which cuts the parabola y2=8x at A and B such that its common chord AB subtends a right angle at the vertex of the parabola is



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