Hypertext Webster Gateway: "Trigonometric"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Trigonometric \Trig`o*no*met"ric\, Trigonometrical
\Trig`o*no*met"ric*al\, [Cf. F. trigonom['e]trique.]
Of or pertaining to trigonometry; performed by the rules of
trigonometry. --{Trig`o*no*met"ric*al*ly}, adv.
{Trigonometrical curve}, a curve one of whose co["o]rdinates
is a trigonometric function of the other.
{Trigonometrical function}. See under {Function}.
{Trigonometrical lines}, 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.
{Trigonometrical survey}. See under {Survey}.
From WordNet (r) 1.7 (wn)
trigonometric
adj : of or relating to or according to the principles of
trigonometry; "trigonometric function"
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