Questions
Length of the tangent drawn from an end of the
latus rectum of the parabola to the circle
of radius a touching externally the parabola at the
vertex is
a
3a
b
2 a
c
7a
d
3 a
detailed solution
Correct option is C
Equation of the circle is (x+a)2+y2=a2and anend of the Latus rectum of the parabola is (a, 2a).Required length is (a+a)2+(2a)2−a2=a7Talk to our academic expert!
Similar Questions
The length of the perpendiculars from the focus
and the extremities of a focal chord of a parabola
on the tangent at the vertex form
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