Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

trigonometric function


Definition of trigonometric function

  1. 1 :  a function (as the sine, cosine, tangent, cotangent, secant, or cosecant) of an arc or angle most simply expressed in terms of the ratios of pairs of sides of a right-angled triangle —called also circular function

  2. 2 :  the inverse (as the arcsine, arccosine, or arctangent) of a trigonometric function


First Known Use of trigonometric function


Learn More about trigonometric function

Seen and Heard

What made you want to look up trigonometric function? Please tell us where you read or heard it (including the quote, if possible).