### Princeton's WordNet

trigonometric function, circular functionnoun

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

**Synonyms:**

trigonometric function, circular function

© Synonyms.com

trigonometric function, circular functionnoun

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

**Synonyms:**

trigonometric function, circular function

© Synonyms.com