Maths-
General
Easy
Question
PQ is a normal chord of the parabola y2 = 4ax at P, A being the vertex of the parabola. Through P a line is drawn parallel to AQ meeting the x-axis in R. Then the length of AR is :
- equal to the length of the latus rectum
- equal to the focal distance of the point P
- equal to twice the focal distance of the point P
- equal to the distance of the point P from the directrix
The correct answer is: equal to twice the focal distance of the point P
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