Elements of Plane Trigonometry
by Hugh Blackburn
Publisher: Macmillan and co 1871
Number of pages: 143
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, in the most convenient way, all the others.
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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 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 D.R. Curtiss, E.J. Moulton - D. C. Heath And Company
The distinguishing features of this book are: a concise presentation of the fundamental part of plane trigonometry up to the solution of triangles; the use of five-place logarithms; a chapter on spherical trigonometry; a chapter on applications.
by Elmer A. Lyman, Edwin C. Goddard - Allyn and Bacon
A trigonometry textbook that treats the solution of triangles quite fully and elaborates analytical trigonometry. It covers angles, trigonometric functions, inverse functions, trigonometric equations and identities, triangles, spherical trigonometry.