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Trigonometry is a branch of mathematics that is the study of trigonometric ratios, such as sine, cosine, tangent, cotangent, secant, and cosecant. Etymologically, trigonometry is known as the “measurement of triangles”, but its applications transcend the mathematical and geometric plane. The field of astronomy uses trigonometric techniques to measure distances between stars, geographical points, and satellite navigation systems. In the mathematical field, trigonometry has contributed multiple functions that have transcended its main objective to become independently studied elements. It is also a concept applied in plane geometry in solutions of equations. In everyday life, trigonometry allows us to calculate distances, measure angles, and so on. If you want to explore more about trigonometric tools and how to apply them to your field of study, take a look at the trigonometry books we have selected for you.


To further expand the topics of mathematical sciences, we have developed the collection of trigonometry books in PDF format. Created especially for those who wish to master the area or simply study for pleasure. Mathematics is fundamental for basic education and also for a wide variety of university professions. This makes many people interested in studying it, so we know that our collection of trigonometry PDF books will serve as a foundation for them. The first glimpses of trigonometry date back to Ancient Egypt and Babylon. In astronomy, the motions of the planets and eclipses were studied and recorded. A rudimentary way of using trigonometry can be seen in the construction of the pyramids. Trigonometry is understood as the branch of mathematics that deals with the measurement of triangles, i.e. trigonometric ratios such as: sine (calculation of the ratio between the opposite side and the hypotenuse), cosine (calculation of the ratio between the adjacent side and the hypotenuse), tangent (calculation of the ratio between both sides), secant (reciprocal ratio of the sine) and cosecant (reciprocal ratio of the cosine). The trigonometric ratios of any angle are also studied, which are part of the study of what is known as unit circle. There are two types of trigonometry: spherical trigonometry, which deals with the study of spherical triangles, and plane trigonometry, which obviously refers to the study and analysis of plane triangles. Moreover, trigonometry has a wide range of applications in the sciences, such as, for example, in the measurement of distances between celestial bodies or in satellite navigation systems. Study the fundamental principles of this discipline by consulting our more than 15 trigonometry books in PDF format, available for free and immediate download to your electronic devices.


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Free Trigonometry Books


Tensor Trigonometry by A.S. Ninul
The tensor trigonometry is development of the flat scalar trigonometry from Leonard Euler classic forms into general multi-dimensional tensor forms with vector and scalar orthoprojections and with step by step increasing complexity and opportunities . . . READ MORE


Trigonometric Delights by Eli Maor
This book presents both a survey of the main elements of trigonometry and a unique account of its vital contribution to science and social development, brings the subject to life in a compelling blend of history, biography, and mathematics. Trigonom . . . READ MORE


College Trigonometry by Carl Stitz, Jeff Zeager
Trigonometry is a branch of mathematics that studies relationships involving lengths and angles of triangles. The field emerged during the 3rd century BC from applications of geometry to astronomical studies. This textbook provides a supportive env . . . READ MORE


Trigonometry by Richard Beveridge
The precursors to what we study today as Trigonometry had their origin in ancient Mesopotamia, Greece and India. These cultures used the concepts of angles and lengths as an aid to understanding the movements of the heavenly bodies in the night sky. . . . READ MORE


Plane Trigonometry by Arnold Dresden
A textbook on plane trigonometry, with examples, exercises, and solutions for students of mathematics, physics, and engineering. This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization . . . READ MORE


255 Compiled and Solved Problems in Geometry and Trig
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 of the problems are at the end of each chapter. The book is especially a dida . . . READ MORE


Open Trigonometry: Basic to Advanced by Wikibooks
This book is pre-calculus trigonometry. It is assume that 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 . . . READ MORE


Plane Trigonometry and Numerical Computation -Young
This book is arrange in such a way that the first six chapters give the essentials of a course in numerical trigonometry and logarithmic computation. The remainder of the theory usually given in the longer courses is contained in the last two chapter . . . READ MORE


A Semester Course in Trigonometry by Marcel B. Finan
This text is a college-level trigonometry text. Trigonometry is an important tool in many sciences and that the textbook is intended to be accessible to freshman, high school and college level students. The table of contents lists 26 chapters coverin . . . READ MORE


Trigonometry Notes by Steven Sy
This books is a text on elementary trigonometry. Though designed for college students, it could also be used in high schools. . . . READ MORE


Spherical Trigonometry by I. Todhunter
This book contains all the propositions usually included under the head of Spherical Trigonometry, together with a large collection of examples for exercise. This work is constructed on the same plan as my treatise on Plane Trigonometry, to which it . . . READ MORE


Practical Trigonometry by H. C. Playne
The object of this book is to give the reader a working knowledge of elementary Trigonometry. Enough examples are worked out in the text to Show how each new principle may be applied, and to show the best way of arranging the work - which is of espec . . . READ MORE


Elements of Plane Trigonometry by Hugh Blackburn
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, a . . . READ MORE


Trigonometry for Beginners by J. B. Lock
A thoroughly practical book. All others that we have in our eye are the works of men who have had considerable experience with senior and junior students. A chapter on Inverse Trigonometric Functions and two chapters on Spherical Trigonometry have be . . . READ MORE


Plane and Spherical Trigonometry in three parts Goodwin
This treatise in the first instance was intended to serve as an introduction to the study of Navigation and Nautical Astronomy for the junior officers under training in H.M. Fleet. The text covers the theoretical portion of Plane Trigonometry, Spher . . . READ MORE


Elementary Trigonometry by W. E. Paterson
This comprehensive introduction to the field of trigonometry is aimed at students and instructors alike. This book is written by a leading mathematician, this book covers the basics of trigonometric functions, identities, and equations, providing rea . . . READ MORE


CK-12 Trigonometry by Mara Landers, Brenda Meery
This book is a comprehensive book on trigonometry. It cover the topics Trigonometry and Right Angles, Circular Functions, Trigonometric Identities, Inverse Functions and Trigonometric Equations, Triangles and Vectors, Polar Equations and Complex Num . . . READ MORE


Trigonometry by Michael Corral - PDF Download
This textbook is a text on elementary trigonometry. It is suitable for a one-semester course at the college level, though it could also be used in high schools for students who have completed courses in high-school algebra and geometry. This book sta . . . READ MORE


Dave's Short Course in Trigonometry by David E. Joyce
This book is an introduction and a guide to trigonometry, with hints and answers to exercises, and Java applets as illustrations. Contents include applications of trigonometry, angle measurement, chords, sines, cosines, tangents and slope, the trigon . . . READ MORE


Plane and spherical trigonometry - Lyman, Elmer
"Plane and Spherical Trigonometry" by Elmer A. Lyman is a comprehensive textbook that covers the fundamental principles of trigonometry. The book is divided into two parts, the first of which covers plane trigonometry and the second of which covers s . . . READ MORE


Trigonometry by Richard Beveridge
The precursors to what we study today as Trigonometry had their origin in ancient Mesopotamia, Greece and India. These cultures used the concepts of angles and lengths as an aid to understanding the movements of the heavenly bodies in the night sky. . . . READ MORE

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