If and are two focal chords of the parabola then the chord and intersect on |
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a) |
Directrix |
b) |
Axis |
c) |
Tangent at vertex |
d) |
None of these |

If and are two focal chords of the parabola then the chord and intersect on |
|||||||

a) |
Directrix |
b) |
Axis |
c) |
Tangent at vertex |
d) |
None of these |

1 Answer

127 votes

**(a)**

is a focal chord, then and

is a focal chord, then and

Now equation of chord is

(i)

Chord is

Or (ii)

For their intersection, we subtract them and get

Or

Hence, they interest on directrix

127 votes

127