conic-section

Question: If a double ordinate of the parabola ${{y}^{2}}=4ax$ be of length $8a$ , then the angle between the lines joining the vertex of the parabola to the ends of this double ordinate is



1) $30^o$
2) $60^o$
3) $90^o$
4) $120^o$
Solution: Explanation: No Explanation
Parabola

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