Ask Questions, Get Answers

Want to ask us a question? Click here
Browse Questions
0 votes

The length of the latus rectum of the parabola whose vertex is $(2 ,-3)$ and the directrix $ x=4 $ is

\[\begin {array}{1 1}(1)2&(2)4\\(3)6&(4)8\end{array}\]

Can you answer this question?

1 Answer

0 votes
Vertex is (2,-3)
Equation of the directrix $x=4$
a= distance of the directrix from the vertex
a= x- distance of the directrix from the vertex.
=> $4a=8$
Hence 4 is the correct answer.
answered May 15, 2014 by meena.p
Ask Question
student study plans
JEE MAIN, CBSE, NEET Mobile and Tablet App
The ultimate mobile app to help you crack your examinations
Get the Android App