17 Jul
2007
17 Jul
'07
3:49 a.m.
* Fred lunnon <fred.lunnon@gmail.com> [Jul 17. 2007 09:48]:
On 7/12/07, Bill Gosper <gosper@alum.mit.edu> wrote:
[...]
Whenever I think I might have discovered a new formula of this type, it turns out to be there already in Ian Todhunter's "Spherical Trigonometry".
This one?: http://www.gutenberg.org/etext/19770 Spherical Trigonometry by Isaac Todhunter
...