Of or pertaining to trigonometry; performed by the rules of trigonometry.
a curve one of whose coördinates is a trigonometric function of the other.
See under Function.
lines which are employed in solving the different cases of plane and spherical trigonometry, as sines, tangents, secants, and the like. These lines, or the lengths of them, are trigonometrical functions of the arcs and angles to which they belong.
See under Survey.