1-3 of 3 Books
The elements of non-Euclidean plane geometry and trigonometry
The elements of non-Euclidean plane geometry and trigonometry
By Carslaw, H. S.

Trigonometry Enhanced with Graphing Utilities 4th Ed. Instructor's Solution Manual
By Sullivan
Lehrbuch der ebenen geometrie und ebenen trigonometrie
Lehrbuch der ebenen geometrie und ebenen trigonometrie
By Johann Karl Hermann Ludowieg