trigonometricaladj.

/ˌtrɪɡənəʊˈmɛtrɪkəl/

Etymology: < trigonometry n. or modern Latin trigonometria + -ic suffix + -al suffix¹; after geometrical, etc.

Of, pertaining to, or performed by trigonometry. trigonometrical functions, those functions of an angle, or of an abstract quantity, used in trigonometry, viz. the sine, tangent, secant, etc.: see trigonometry n. trigonometrical point, trigonometrical station, a reference point on high ground, usually marked by a small pyramidal structure, used in triangulation. trigonometrical survey, a survey of a country or region performed by triangulation and trigonometrical calculation.

ΘΚΠ

the world > relative properties > number > geometry > [adjective] > branches of > of trigonometry

sinical1593

trigonometrical1666

trigonometric1811

trig1862

the world > the earth > earth sciences > geography > map-making > surveying > [noun] > types of survey

trigonometrical survey1801

geological survey1818

traverse survey1860

cadastral survey1861

coast-lining1902

resistivity survey1924

resistivity surveying1932

the world > the earth > earth sciences > geography > map-making > surveying > [noun] > trig point or station

trigonometrical station1860

trig station1926

trig point1936

1666 [implied in: J. Collins Let. in S. P. Rigaud & S. J. Rigaud Corr. Sci. Men 17th Cent. (1841) (modernized text) I. 115 Problems that seem easy trigonometrically, but not so analytically. (at trigonometrically adv.)].

1690 W. Leybourn Cursus mathematicus f. 552 To find the Altitude..by Trigonometrical Calculation.

1706 W. Jones Synopsis Palmariorum Matheseos 278 Any three..being given, the other three may be found by Trigonometrical Calculation.

1759 P. Murdoch in Philos. Trans. 1758 (Royal Soc.) 50 543 A table of the trigonometrical analogies.

1798 C. Hutton Course Math. II. 3 A Trigonometrical Canon, is a table exhibiting the length of the sine, tangent, and secant, to every degree and minute of the quadrant, with respect to the radius, which is expressed by unity or 1.

1801 Capt. W. Madge (title) Account of the Operations carried on for accomplishing a Trigonometrical Survey of England and Wales, 1797.

1860 J. Tyndall Glaciers of Alps i. xi. 69 A pyramid of stones used as a trigonometrical station by Professor Forbes.

1886 T. P. White Ordnance Survey of U.K. iv. 68 In very many cases the old trigonometrical points were again observed to or from.

1949 T. W. Birch Maps vi. 56 The trigonometrical points or stations determined by theodolite are accurately plotted on the plane-table sheet.

This entry has not yet been fully updated (first published 1914; most recently modified version published online June 2021).

单词	trigonometrical
释义	trigonometricaladj. /ˌtrɪɡənəʊˈmɛtrɪkəl/ Etymology: < trigonometry n. or modern Latin trigonometria + -ic suffix + -al suffix¹; after geometrical, etc. Of, pertaining to, or performed by trigonometry. trigonometrical functions, those functions of an angle, or of an abstract quantity, used in trigonometry, viz. the sine, tangent, secant, etc.: see trigonometry n. trigonometrical point, trigonometrical station, a reference point on high ground, usually marked by a small pyramidal structure, used in triangulation. trigonometrical survey, a survey of a country or region performed by triangulation and trigonometrical calculation. ΘΚΠ the world > relative properties > number > geometry > [adjective] > branches of > of trigonometry sinical1593 trigonometrical1666 trigonometric1811 trig1862 the world > the earth > earth sciences > geography > map-making > surveying > [noun] > types of survey trigonometrical survey1801 geological survey1818 traverse survey1860 cadastral survey1861 coast-lining1902 resistivity survey1924 resistivity surveying1932 the world > the earth > earth sciences > geography > map-making > surveying > [noun] > trig point or station trigonometrical station1860 trig station1926 trig point1936 1666 [implied in: J. Collins Let. in S. P. Rigaud & S. J. Rigaud Corr. Sci. Men 17th Cent. (1841) (modernized text) I. 115 Problems that seem easy trigonometrically, but not so analytically. (at trigonometrically adv.)]. 1690 W. Leybourn Cursus mathematicus f. 552 To find the Altitude..by Trigonometrical Calculation. 1706 W. Jones Synopsis Palmariorum Matheseos 278 Any three..being given, the other three may be found by Trigonometrical Calculation. 1759 P. Murdoch in Philos. Trans. 1758 (Royal Soc.) 50 543 A table of the trigonometrical analogies. 1798 C. Hutton Course Math. II. 3 A Trigonometrical Canon, is a table exhibiting the length of the sine, tangent, and secant, to every degree and minute of the quadrant, with respect to the radius, which is expressed by unity or 1. 1801 Capt. W. Madge (title) Account of the Operations carried on for accomplishing a Trigonometrical Survey of England and Wales, 1797. 1860 J. Tyndall Glaciers of Alps i. xi. 69 A pyramid of stones used as a trigonometrical station by Professor Forbes. 1886 T. P. White Ordnance Survey of U.K. iv. 68 In very many cases the old trigonometrical points were again observed to or from. 1949 T. W. Birch Maps vi. 56 The trigonometrical points or stations determined by theodolite are accurately plotted on the plane-table sheet. This entry has not yet been fully updated (first published 1914; most recently modified version published online June 2021). < adj.1666
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