Conic Sections Question 246

Question: The eccentricity of the ellipse $ 9x^{2}+5y^{2}-18x-2y-16=0 $ is

[EAMCET 2003]

Options:

A) 1/2

B) 2/3

C) 1/3

D) 3/4

Show Answer

Answer:

Correct Answer: B

Solution:

Given equation can be written as $ \frac{{{(x-1)}^{2}}}{5}+\frac{{{(y-2)}^{2}}}{9}=1 $ ; $ e=\sqrt{\frac{b^{2}-a^{2}}{b^{2}}}=\sqrt{\frac{9-5}{9}}=\frac{2}{3} $ .