The length of the latus rectum of the ellipse $9{x^2} + 4{y^2} = 1$, is
$\frac{3}{2}$
$\frac{8}{3}$
$\frac{4}{9}$
$\frac{8}{9}$
On the ellipse $\frac{{{x^2}}}{{18}} + \frac{{{y^2}}}{8} = 1$ the point $M$ nearest to the line $2x - 3y + 25 = 0$ is
If the area of the auxiliary circle of the ellipse $\frac{{{x^2}}}{{{a^2}}}\, + \,\frac{{{y^2}}}{{{b^2}}}\, = \,1(a\, > \,b)$ is twice the area of the ellipse, then the eccentricity of the ellipse is
The eccentricity of the ellipse $9{x^2} + 5{y^2} - 30y = 0$, is
Let $P(2,2)$ be a point on an ellipse whose foci are $(5,2)$ and $(2,6)$, then eccentricity of ellipse is
If $\frac{{\sqrt 3 }}{a}x + \frac{1}{b}y = 2$ touches the ellipse $\frac{{{x^2}}}{{{a^2}}} + \frac{{{y^2}}}{{{b^2}}} = 1$ then its, eccentric angle $\theta $ is equal to: ................ $^o$