Find the equation of the hyperbola whose vertices are (0, ±3) and the eccentricity is . Also, find the coordinates of its foci.
Given: Vertices are (0, ±3) and the eccentricity is
Need to find: The equation of the hyperbola and coordinates of foci.
Let, the equation of the hyperbola be:
Vertices are (±3, 0), that means, a = 3
A and B are vertices.
And also given, the eccentricity, e =
We know that,
Therefore,
⇒
⇒ [Squaring both sides]
⇒
⇒ [As a = 3]
So, the equation of the hyperbola is,
⇒
Coordinates of the foci = (ae, 0) = (
4, 0) [Answer]