TY  - BOOK
AU  - Baltazar, Ethel Cecille M.
AU  - Dy, Ana Liza M.
AU  - Vidar, Melvin A.
TI  - Plane and spherical trigonometry: text/workbook 
SN  - 9789719801641
PY  - 2014///
CY  - Quezon City
PB  - C & E Publishing
KW  - Trigonometry
KW  - Textbooks
KW  - Problems, exercises
N1  - Includes references
N2  - Contents: Angles and their measurements. -- Circular functions of an angle. -- Trigonometric identities. -- Inverse trigonometric functions. -- Trigonometric equations. -- Solutions of right triangle. -- Solutions of oblique triangles. -- Spherical trigonometry. -- The logarithmic functions
ER  -