I teach a course on non-Euclidean geometry to high schoolers. I'm looking for an article or book that gives a thorough and interesting history of spherical geometry and trigonometry. I'm looking for it for my own learning and possibly to distribute to my students. I'd like something that has some substance to it--not just a couple of facts tossed off for color. A treatment that gives an overview of spherical geometry through the ages would be great, as would a "zoomed in" treatment of some particular episode.
Edit: Some good resources have been suggested below, especially the book suggested by unclejamil. I still haven't found quite what I'm looking for, though. I'd like something that focuses just on the history of the study of the geometry and trigonometry of the sphere, from ancient times to modernity, focusing on major advances and motivations. Any thoughts?
If I can't find such a source ready-made, I'll try to put together a short essay myself.