# Hyperbola: About Hyperbola: Standard Equation of Hyperbola (For CBSE, ICSE, IAS, NET, NRA 2022)

Doorsteptutor material for NDA is prepared by world's top subject experts: fully solved questions with step-by-step explanation- practice your way to success.

# Title: Hyperbola

- A spacecraft can use the gravity of a planet to alter its path and propel it at high speed away from the planet and back out into space using a technique called “gravitational slingshot.”
- If this happens, then the path of the spacecraft is a
**hyperbola**.

## About Hyperbola

- It is defined as an open curve having two branches which are mirror images to each other.
- A hyperbola is two curves that are like infinite bows.
- Looking at just one of the curves:
- any point P is closer to F than to G by some constant amount
- The other curve is a mirror image, and is closer to G than to F.
- Here, we will be studying about hyperbola and characteristics of such curves.
- Hyperbolic curves are of special importance in astronomy &space studies.
- So, the distance from P to F is always less than the distance P to G by some constant amount. (And for the other curve P to G is always less than P to F by that constant amount.)

## Standard Equation of Hyperbola

- The equation of the hyperbola is simplest when the center of the hyperbola is at the origin and the foci are either on the x-axis or on the y-axis.
- The standard equation of a hyperbola is given as:

Where,

## Important Terms and Formulas of Hyperbola

### Conic Section

- The slice must be steeper than that for a parabola, but does not have to be parallel to the cone՚s axis for the hyperbola to be symmetrical.
- So, the hyperbola is a conic section (a section of a cone) .

### Eccentricity (E)

- Any branch of a hyperbola can also be defined as a curve where the distances of any point from:
- a fixed point (the focus) , and
- a fixed straight line (the directrix) is always in the same ratio

## Conjugate Hyperbola

2 hyperbolas such that transverse & conjugate axes of one hyperbola are respectively the conjugate & transverse axis of the other are called **conjugate hyperbola** of each other.

This are conjugate hyperbolas of each other.

## Rectangular Hyperbola

- The rectangular hyperbola is a hyperbola axes (or asymptotes) are perpendicular, or with its eccentricity is .
- Hyperbola with conjugate axis = transverse axis is a = b example of rectangular hyperbola.