Trigonometry (from Greek trigonon 'triangle' + metron 'measure' or from Sanskrit trikon 'triangle' + miti 'measurement' = trikonmiti) is a branch of mathematics that studies triangles and the relationships between their sides and the angles between the sides. Trigonometry defines the trigonometric functions, which describe those relationships and have applicability to cyclical phenomena, such as waves. The field evolved during the third century BC as a branch of geometry used extensively for astronomical studies.
Introduction to trigonometric identities
If you're starting to sense that there may be more to trig functions than meet the eye, you are sensing right. In this tutorial you'll discover exciting and beautiful and elegant and hilarious relationships between our favorite trig functions (and maybe a
United Brethren in Christ. General conference. Commission on revision of the Confession of Faith and amendment to Constitution of the church, 1885 ; United Brethren in Christ
Mémoire couronné par l'Académie Royale des Sciences, qui en avait mis le sujet au concours pour l'année 1818.
Trigonometry ; Mensuration
Supplemental catalog subcollection information: American Libraries Collection; American University Library Collection
Basic interpretation of the graph of the cosine function
Videos and exercises on trigonometry. Watch the Geometry playlist first if you have trouble understanding the topics covered here.
Visualizing changes in amplitude and period for a cosine function
Thinking about where the graphs of sin and cos intersect.
Exploring a motivation for even defining hyperbolic sine and cosine
Motivation and understanding of hyperbolic trig functions.
Technical Reference Publication
Introduction: Directory Services are a fundamental requirement of both human and computer communications' systems. Human users need to be able to look up various details about other people: for example, telephone numbers, facsimile numbers and paper mail addresses. Computing systems also need Directory Services for several purposes: for example, to support address look-ups for a variety of services, and to support user-friendly naming and distribution lists in electronic mail systems.
Using the unit circle definition of the sine function to make a graph of it.
Graphing a sin curve to think about its domain and range.
Why they are called hyperbolic trigonometric functions
Supplemental catalog subcollection information: American Libraries Collection; American University Library Collection; Historical Literature; Typescript; Thesis (Ph. D.)--University of Florida, 1994; Vita; Includes bibliographical references (leaves 224-237)