Assertion: trigonometric function | /r/CapableOf | call angle functions
Facets:
value: in mathematics
type: OTHER
Source sentences:
text: In mathematics, the trigonometric functions (also called circular functions, angle functions or goniometric functions) are real functions which relate an angle of a right-angled triangle to ratios of two side lengths.
text: In mathematics, the trigonometric functions (also called circular functions, angle functions or goniometric functions) are functions of an angle.