If 
be a point on the parabola 
and 
is the foot perpendicular drawn from 
on the directrix of the parabola, then length of each side of an equilateral triangle 
, where 
is focus of the parabola is
a)
2
b)
4
c)
6
d)
8
If be a point on the parabola and is the foot perpendicular drawn from on the directrix of the parabola, then length of each side of an equilateral triangle , where is focus of the parabola is
a)
2
b)
4
c)
6
d)
8
Question ID - 55847 | SaraNextGen Top Answer
If be a point on the parabola and is the foot perpendicular drawn from on the directrix of the parabola, then length of each side of an equilateral triangle , where is focus of the parabola is
a)
2
b)
4
c)
6
d)
8
|
If |
|||||||
|
a) |
2 |
b) |
4 |
c) |
6 |
d) |
8 |
1 Answer
127 votes
Answer Key / Explanation : (c) -
(c)
Equation of directrix is
i.e, 
Let coordinates of 
be 
Therefore, coordinate of 
are 
length of side =6
127 votes
Answer Link
127