Suppose that the foci of the ellipse are where . Let be two parabolas with a common vertex at (0,0) and with foci at respectively. Let be a tangent to which passes through and be a tangent to which passes through. If is the slope of and is the slope of , then the value of is
4
3
2
1
The foci are (±ae, 0) i.e. (2, 0) and (–2, 0).
As tangent with slope passes through (–4, 0),
Again for tangent with slope passing through (2, 0),
Study 40% syllabus and score up to 100% marks in JEE