From the point (15, 12) three normals are drawn to the parabola then centroid of triangle formed by three co-normals points is |
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a) |
b) |
(4, 0) |
c) |
d) |
(6, 0) |

From the point (15, 12) three normals are drawn to the parabola then centroid of triangle formed by three co-normals points is |
|||||||

a) |
b) |
(4, 0) |
c) |
d) |
(6, 0) |

1 Answer

127 votes

**(c)**

The equation of any normal be

Since it passes through the points (15, 12)

One root is , then

Therefore, the co-normal points are ( 16, 8)

Therefore, centroid is

127 votes

127