Question
Question: The length of the latus rectum of an ellipse is \(\frac{1}{3}\)of the major axis. Its eccentricity i...
The length of the latus rectum of an ellipse is 31of the major axis. Its eccentricity is
A
32
B
32
C
735×4×3
D
(43)4
Answer
32
Explanation
Solution
a2b2= 31 (2a)
̃ 3b2 = a2 ̃ 3a2 (1 – e2) = a2
̃ 1 – e2 =31̃ e2 =32̃ e = 32