TY  - BOOK
AU  - Endam, Joemar C.
AU  - Mamhot, Alice A.
AU  - Banagua, Emelyn C.
AU  - Bantug, Jenette S.
TI  - Plane and spherical trigonometry: A tetrahedron approach 
U1  - BFil. 516.242  
PY  - 2015///
CY  - Manila: 
PB  - Unlimited Books Library Services & Publishing Inc.
KW  - Trigonometry
N1  - Includes appendix, index and references; -- Chapter 1. Basic Concepts and use of calculator -- 2. The right triangle -- 3. word problems on right Triangles -- 4. Trigonometric Function of any angle measure -- 5. Relationship of trigonometric Functions -- 6. Trigonometric Identities -- 7. Graphs of trigonometric Functions -- 8. Inverse Trigonometric Functions -- 9. Trigonometric Equations -- 10. Oblique Triangles -- 11. course and bearing -- 12. Complex Numbers -- 13. Right Spherical Triangle -- 14. Oblique Spherical Triangle -- 15. Applications of spherical triangles
ER  -