Find the coordinates of the foci and the vertices,the eccentricity,and the length of the latus rectum of the hyperbola $5y^{2} - 9x^{2} = 36$.

Vedclass pdf generator app on play store
Vedclass iOS app on app store
The given equation is $5y^{2} - 9x^{2} = 36$.
Dividing by $36$,we get $\frac{y^{2}}{(36/5)} - \frac{x^{2}}{4} = 1$.
Comparing this with the standard equation $\frac{y^{2}}{a^{2}} - \frac{x^{2}}{b^{2}} = 1$,we have $a^{2} = \frac{36}{5}$ and $b^{2} = 4$.
Thus,$a = \frac{6}{\sqrt{5}}$ and $b = 2$.
For a hyperbola,$c^{2} = a^{2} + b^{2} = \frac{36}{5} + 4 = \frac{56}{5}$.
So,$c = \sqrt{\frac{56}{5}} = \frac{2\sqrt{14}}{\sqrt{5}}$.
Coordinates of the foci are $(0, \pm c) = (0, \pm \frac{2\sqrt{14}}{\sqrt{5}})$.
Coordinates of the vertices are $(0, \pm a) = (0, \pm \frac{6}{\sqrt{5}})$.
Eccentricity $e = \frac{c}{a} = \frac{2\sqrt{14}/\sqrt{5}}{6/\sqrt{5}} = \frac{\sqrt{14}}{3}$.
Length of the latus rectum $= \frac{2b^{2}}{a} = \frac{2 \times 4}{6/\sqrt{5}} = \frac{4\sqrt{5}}{3}$.

Explore More

Similar Questions

Let the eccentricity $e$ of a hyperbola satisfy the equation $6e^2 - 11e + 3 = 0$. If the foci of the hyperbola are $(3, 5)$ and $(3, -4)$, then the length of its latus rectum is:

If the coordinates of a point are given by the equations $x = b \sec \phi$ and $y = a \tan \phi$,then its locus is

Let $C$ be the centre of the hyperbola $\frac{x^2}{a^2}-\frac{y^2}{b^2}=1$ and $P$ be a point on it. If the tangent at $P$ to the hyperbola meets the straight lines $bx-ay=0$ and $bx+ay=0$ respectively in $Q$ and $R$,then $CQ \cdot CR=$

The transverse axis of a hyperbola is along the $x$-axis and its length is $2a$. The vertex of the hyperbola bisects the line segment joining the centre and the focus. The equation of the hyperbola is

Let the latus rectum of the hyperbola $\frac{x^2}{9}-\frac{y^2}{b^2}=1$ subtend an angle of $\frac{\pi}{3}$ at the centre of the hyperbola. If $b^2$ is equal to $\frac{l}{m}(1+\sqrt{n})$,where $l$ and $m$ are co-prime numbers,then $l^2+m^2+n^2$ is equal to . . . . . . .

Vedclass Products

For Students

Vedclass Test Series

Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.

Start Free Trial
For Teachers

Exam Paper Generator

Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.

Try Free
For Institutes

Online Exam Module

Live online exams with unlimited students, 360° analytics & white-label branding.

See Demo