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Basic Trigonometry for Secondary Schools

Authors: Melecio Deauna and Florita Lamayo

Copyright: 1999



  • Geared towards empowering students with a high degree of competitiveness in mathematics!
  • Demonstrates a masterful integration of basic algebraic concepts into trigonometric application, affirming the indispensable relationship between these two branches of mathematics.
  • Caters to the different levels of intelligence of the students.
  • Employs the inductive approach, leading students to investigate in find answers to problems through questions coupled with illustrations.
  • Enumerates behavioral objectives at the beginning of the lessons to help the students focus on the key concepts they need to learn.
  • Includes historical background on the lives and works of key persons in the field of trigonometry to inspire students.


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