The six functions just defined are variously known as the trigonometric, circular, or goniometric functions.    From Wordnik.com.  [LearnHub Activities] Reference

Denote AC, the side adjacent to the angle A, by b (for base), BC, the side opposite the angle A, by a (for altitude), and the hypotenuse AB by h. trigonometric, circular, or goniometric functions.    From Wordnik.com.  [LearnHub Activities] Reference

The three-axis ANT130 is a part of Aerotech's nano Motion Technology (nMT) positioning range that brings together linear, rotary and goniometric stages to provide exceptional precision, rapid acceleration, high speed and ultra-fine resolution for nanometre-resolution positioning.    From Wordnik.com.  [Manufacturingtalk - manufacturing industry news] Reference

Aerotech's new LaserTurn1 is a highly integrated direct-drive linear and rotary motion platform including automated workpiece handing for high throughput cylindrical component production Vacuum Preparation Tutorial for Motion Control Systems is updated and expanded Aerotech's new rotary motion simulators provide positioning and rate AGC Series goniometric cradles provide stacked pitch, yaw and roll Aerotech's Ensemble ™ motion controller range now available for EPICS.    From Wordnik.com.  [optics.org all content] Reference

Trigonometric, because they form the basis of the science of trigonometry; circular, because of their relations to the arc of a circle; goniometric, because of their use in determining angles, from gonia, a Greek word meaning angle.    From Wordnik.com.  [LearnHub Activities] Reference