by Arnold Dresden
Publisher: John Wiley And Sons 1921
Number of pages: 130
No attempt at logical completeness has been made, but rather has it been the author's aim to adapt the treatment to the stage of logical development which may be expected of students who begin the study of trigonometry ...
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by Hugh Blackburn - Macmillan and co
Trigonometry is the science of the numerical relations between the sides and angles of triangles. This treatise is intended to demonstrate how from given values of some of the sides and angles of a triangle to calculate all the others.
by Steven Sy - Michigan State University
From the table of contents: Review of Functions; Rational Functions; Elementary Trigonometry; Graphing Trigonometric Functions; Trigonometric Identities; Advanced Trigonometric Concepts; Triangle Trigonometry; Selected Answers to the Exercises.
Book 1 is pre-calculus trigonometry. We assume the student is relatively new to algebra and do algebra step by step. Many of the pages have closely related free/YouTube videos at the Khan Academy. Many students find the video presentation helpful.
by Florentin Smarandache - viXra.org
This book includes 255 problems of 2D and 3D Euclidean geometry plus trigonometry. The degree of difficulties of the problems is from easy and medium to hard. The solutions are at the end of each chapter. The book is especially a didactic material...