Assertion: trigonometric function | /r/CapableOf | use reference angles
Facets:
value: to evaluate the trigonometric functions
type: PURPOSE
Source sentences:
text: Trigonometric functions use reference angles to evaluate the trigonometric functions secant, tangent, and cotangent.
text: Trigonometric functions use reference angles to evaluate the trigonometric functions secant, tangent, and cotangent.