What is "trigonometrical survey"

Survey \Sur"vey\, n. [Formerly accentuated universally on the last syllable, and still so accented by many speakers.]

1. The act of surveying; a general view, as from above.

   Under his proud survey the city lies.
   --Sir J. Denham.

2. A particular view; an examination, especially an official examination, of all the parts or particulars of a thing, with a design to ascertain the condition, quantity, or quality; as, a survey of the stores of a ship; a survey of roads and bridges; a survey of buildings.

3. The operation of finding the contour, dimensions, position, or other particulars of, as any part of the earth's surface, whether land or water; also, a measured plan and description of any portion of country, or of a road or line through it.

   Survey of dogs. See Court of regard, under Regard.

   Trigonometrical survey, a survey of a portion of country by measuring a single base, and connecting it with various points in the tract surveyed by a series of triangles, the angles of which are carefully measured, the relative positions and distances of all parts being computed from these data.

   Syn: Review; retrospect; examination; prospect.

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. [1913 Webster]
-- 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.