Trigonometric functions

  • Nelson H. F. BeebeEmail author


Trigonometry, from the Greek words for triangle and measurement, has been of interest to (at least some) humans for more than four millennia, with early evidence of use in Egypt, India, Mesopotamia, and Greece. The common method of measuring angles in degrees, minutes, and seconds comes from the Babylonian sexagesimal (base-60) number system, although in modern mathematics and computer software, circular measure of radians, where 2π radians is the angle of one complete rotation through a circle, is preferred.


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Copyright information

© Springer International Publishing AG 2017

Authors and Affiliations

  1. 1.Department of MathematicsUniversity of UtahSalt Lake CityUSA

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