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The tangents drawn at the extremities of a focal chord of the parabola $y^{2}=16 x$
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intersect on the line $x+4=0$
The tangent at the extremities of a focal chord of a parabola intersect at right angles on the directrix.
Now, equation of parabola is $y^{2}=16 x$.
So, its directrix is $x=-4$ or $x+4$.
So, tangent intersect on the line $x+4=0$.
Now, equation of parabola is $y^{2}=16 x$.
So, its directrix is $x=-4$ or $x+4$.
So, tangent intersect on the line $x+4=0$.
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