Formulas, notes and solved problems on : plane trigonometry - Asin, Ricardo C. (Valenzuela City, Philippines : Tru-copy Publishing House, 1996)
Chapter 1. basic Mathematics Concepts -- Chapter 2. Trigonometry Using the Triangle Approach -- Chapter 3. Solutions of Right Triangles -- Chapter 4. Solutions of Oblique Triangles.
Keywords: PLANE TRIGONOMETRY -- MATHEMATICS