If the line is the tangent to the ellipse
at the point , then the length
of the latus rectum of the ellipse is :
9
5
Tangent to a given ellipse at
Equation of tangent at
Now compare this equation with given equation of tangent x - 2y = 12
Length of LR =
So, correct option is (1).
Option 1)
9
Option 2)
Option 3)
5
Option 4)
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