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31. Focus and vertex of a parabola are a F(-6,-6) and V(0,2) respectively.If PQ is a focal chord of the parabola and PF = 30 then QF is equal to A 10 B 15 C 20 D 25 |
| Answer» 31. Focus and vertex of a parabola are a F(-6,-6) and V(0,2) respectively.If PQ is a focal chord of the parabola and PF = 30 then QF is equal to A 10 B 15 C 20 D 25 | |