Timeline for Cosine sum problem
Current License: CC BY-SA 2.5
5 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Aug 19, 2010 at 6:23 | comment | added | Dan Brumleve | Richard, the other thing I might not have explained very well is that I am giving each point a link weight of 1 to itself. This way all you have to do is show that the sum is negative and it isn't even necessary to normalize the circle to a unit radius. | |
| Aug 19, 2010 at 4:26 | comment | added | Dan Brumleve | The difference in x coordinates is required to be the same as the cosine of the difference in angle only when one of the points is at (1,0) and the circle is centered and normalized. My answer describes rotating a candidate point into this position so the two definitions are the same in that case. | |
| Aug 18, 2010 at 13:39 | comment | added | Mariano Suárez-Álvarez | Please make this a comment on your question or, even better, edit the question itself to avoid any misunderstanding! | |
| Aug 18, 2010 at 10:45 | comment | added | Robin Chapman | What don't you understand about the two valid solutions that have been posted? | |
| Aug 18, 2010 at 10:36 | history | answered | Richard T | CC BY-SA 2.5 |