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The tangents drawn at the extremeties of a focal chord of the parabola $y^{2}=16 x$
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Verified Answer
The correct answer is:
intersect on the line $x+4=0$
Given equation is $y^{2}=16 x$
Here, $\quad a=4$
As we know, that if tangents are drawn from an external points of a focal chord, then it will intersect on the directrix of the parabola.
$\therefore$ Equation of directrix is
$$
x=-4
$$
or
$x+4=0$
Which is the required equation.
Here, $\quad a=4$
As we know, that if tangents are drawn from an external points of a focal chord, then it will intersect on the directrix of the parabola.
$\therefore$ Equation of directrix is
$$
x=-4
$$
or
$x+4=0$
Which is the required equation.
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