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Let P , Q and R are three co-normal poin...

Let P , Q and R are three co-normal points on the parabola `y^2=4ax`. Then the correct statement(s) is /at

A

algebraic sum of the slopes of the normals at P,Q and R vanishes

B

algebraic sum of the ordinates of the points P,Q and R vanishes

C

centeroid of the traingle PQR lies on the axis of the parabola

D

Circle cicrcumscribing the traingle PQR passes through the vertex of the parabola.

Text Solution

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The correct Answer is:
A, B, C, D
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