Two straight lines are perpendicular to each other. One of them touches the parabola and the other touches . Their point of intersection lies on the line |
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a) |
b) |
c) |
d) |

Two straight lines are perpendicular to each other. One of them touches the parabola and the other touches . Their point of intersection lies on the line |
|||||||

a) |
b) |
c) |
d) |

1 Answer

127 votes

**(c)**

Any tangent to is

(i)

Any tangent to which is perpendicular to Eq. (i) is

(ii)

Subtracting, we get

Or which is a locus of their point of intersection

127 votes

127