Hyperbola
Chapter Name : Conic Section |
Sub Topic Code : 104_11_11_06_01 |
Topic Name : Hyperbola |
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Sub Topic Name : Hyperbola |
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Introduction
• When you cut a cone such that cutting plane is inclined at an angle greater than the exterior angle of the cone then, the section gives a hyperbola. • A hyperbola is defined as the locus of points where the absolute value of the difference of the distances to the two foci is a constant.
Pre-Requisites:
Linear Equation, Quadratic Equation, Basic coordinate geometry, Equation of line
Real Life Question:
What is the section of cone called that is formed when the cutting plane doesn’t intersect the axis of cone inside the cone?
Key Words / FlashCards
| Key Words | Definitions (pref. in our own words) |
|---|---|
| Hyperbola | A hyperbola is defined as the locus of points where the absolute value of the difference of the distances to the two foci is a constant. |
| Focus | The fixed points are known as foci (plural of focus). |
| Directrix | Directrix of hyperbola is a line such that ratio of the distance of the points on the hyperbola from focus to its distance from directrix is constant. |
Learning aids / Gadgets
| Gadgets | How it can be used |
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Real life uses :
It is used widely in architecture, civil engineering and space shuttle launching. Many shapes and designs are made using the concepts of hyperbola. Hyperbolic path is used for launching of several satellites.
Practical examples around us
| Examples | Explainations |
|---|---|
| Hour glass | If you notice the outline of the hourglass it forms the exact shape of a hyperbola. |
| Base Ball | If you look closely you can see how the stitches in this baseball form a hyperbola. |
What you learn in Theory:
• What is hyperbola? • How is it a conic section?