JEE Main 2019 Mathematics question
If the line x − 2y = 12 is tangent to the ellipse at the point , then the length of the latus rectum of the ellipse is:
Answer: (D)
Solution
Tangent ≡ ⇒ , ; LR = .
If the line x − 2y = 12 is tangent to the ellipse at the point , then the length of the latus rectum of the ellipse is:
Tangent ≡ ⇒ , ; LR = .