Copy of Spherical Triangle: Napier's Rules
- Author:
- Hisham Amir @ Wavelink, Steve Phelps
Spherical right triangles and Napier's Rules http://upload.wikimedia.org/wikipedia/commons/thumb/0/07/Spherical_trigonometry_Napier_right-angled.svg/443px-Spherical_trigonometry_Napier_right-angled.svg.png