trigonometric function — English Dictionary

Noun

1. Any function of an angle expressible as the ratio of two of the sides of a right triangle that has that angle (e.g., sine), or that subtracts 1 from such a ratio or subtracts such a ratio from 1 (e.g., coversed sine).

   Broader terms

   function

   Narrower terms

   cosine functioncotangent functioncosecant functionsecant functionsine functionsubsine functiontangent function

Noun

1. function of an angle expressed as a ratio of the length of the sides of right-angled triangle containing the angle

   Synonyms

   circular function

   Broader terms

   functionmathematical functionsingle-valued functionmapmapping