1.

If a double ordinate of the parabola y2=4ax be of length 8a, then the angle between the lines joining the vertex of the parabola to the ends of this double ordinate is

Answer»

If a double ordinate of the parabola y2=4ax be of length 8a, then the angle between the lines joining the vertex of the parabola to the ends of this double ordinate is



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