Hi..I have a basic question regarding the equation of an ellipse. Lets say I ahve an ellipse with major and minor axes 2a and 2b respectively. Now, to check whether a point lies inside this ellipse, its fairly simple...I can just use the standars ellipse equation for that. Now, if my major axis is rotates to..lets say 45 degrees, how does the equation of the ellipse vary and how do I find then whether a certain point lies within the ellipse?? Logically, rotation of the major axis must not change the way I look for a point to be located inside/outside an ellipse. except that lets say once the rotation angle is >= 90 degrees your major axis becomes minor an vice-versa. Is my thinking correct?? or does the equation and method vary??? I'd really appreciate it if someone can throw me some pointers...thanks..(adsbygoogle = window.adsbygoogle || []).push({});

PS: Before any1 asks, this is not a homework problem..am a workign professional..cheers!!!

**Physics Forums - The Fusion of Science and Community**

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Ellipse Major Axis Rotation

Loading...

Similar Threads - Ellipse Major Axis | Date |
---|---|

A Ellipse of transformation from spherical to cartesian | Apr 23, 2016 |

Area of a Truncated Ellipse | Mar 24, 2015 |

Equation to graph a 180 degree curve comprised of a radius and an ellipse | Nov 30, 2012 |

Finding the Minor and major axis lenths of an ellipse from conjugate diameters | Feb 2, 2012 |

Finding new major axis of ellipse after stretching along arbitrary axis | Sep 8, 2008 |

**Physics Forums - The Fusion of Science and Community**