Open Trigonometry: Basic to Advanced
Publisher: Wikibooks 2014
Number of pages: 51
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. This is by design. Many students find the video presentation helpful with learning mathematical material.
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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...
by Arnold Dresden - John Wiley And Sons
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 ...
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 I. Todhunter - Macmillan and co
The present work contains all the propositions usually included under the head of Spherical Trigonometry, together with a large collection of examples for exercise. The examples have been selected from the University and College Examination Papers.