An Introduction to Trigonometry and its Applications

Indexed in: EBSCO, Ulrich's Periodicals Directory

This book represents a novel approach for the trigonometry and an original scientific work in this field, by using the ensemble structure composed of the real analysis and the axiomatic fundaments of ...
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The Fundamental Trigonometric Functions and the Customary Inversive Restrictions

Pp. 60-83 (24)

Vasile Postolică


This part of this book is devoted to the fundamental trigonometric functions examined together with their inverted restrictions, following the main directions of studies specified at the end of Chapter 2.


Angle, measure, trigonometric circle, sine, cosine, tangent, cotangent function, their corresponding inverted functions, graphics, properties.


Romanian Academy of Scientists, “Vasile Alecsandri” University of Bacău, România.