Drexel dragonThe Math ForumDonate to the Math Forum

Search All of the Math Forum:

Views expressed in these public forums are not endorsed by Drexel University or The Math Forum.

Math Forum » Discussions » Math Topics » geometry.puzzles.independent

Topic: Re: Locus for ratio of cosine of angles to be constant
Replies: 0  

Advanced Search

Back to Topic List Back to Topic List   Topics: [ Previous | Next ]

Posts: 356
Registered: 9/16/06
Re: Locus for ratio of cosine of angles to be constant
Posted: Nov 18, 2013 9:07 AM
  Click to see the message monospaced in plain text Plain Text   Click to reply to this topic Reply


dr/ds - dx/ds ecc = 0 which integrates to

r - x ecc = r - r cos(th) ecc = p, an arbitrary constant.

1 - ecc cos(th) = p/r the polar equation of all conics.

Given constant is eccentricity and arbitrary constant
p is semi-latus rectum.



Point your RSS reader here for a feed of the latest messages in this topic.

[Privacy Policy] [Terms of Use]

© Drexel University 1994-2015. All Rights Reserved.
The Math Forum is a research and educational enterprise of the Drexel University School of Education.