A) intersect on \[x=0\]
B) intersect on the line \[x+4=0\]
C) intersect at an angle of \[{{60}^{o}}\]
D) intersect at an angle of \[{{45}^{o}}\]
Correct Answer: B
Solution :
Given equation is \[{{y}^{2}}=16x\] Here, \[a=4\] 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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