A) Axis
B) Directrix
C) Latus rectum
D) Tangent at vertex
Correct Answer: A
Solution :
Normal to parabola will be, \[y=mx-2am-a{{m}^{3}}\] For three values of m. Three normal can be drawn on parabola\[{{y}^{2}}=4ax\]. So three feet of normals can be obtained, hence centroid of triangle lies on axis of parabola.You need to login to perform this action.
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