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Trigonometrical   Listen
adjective
Trigonometrical, Trigonometric  adj.  Of or pertaining to trigonometry; performed by the rules of trigonometry.
Trigonometrical curve, a curve one of whose coordinates 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.






Collaborative International Dictionary of English 0.48








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"Trigonometrical" Quotes from Famous Books



... minute for Dublin, where he joins the Trigonometrical Survey—a great honour for a fellow not six ...
— Blackwood's Edinburgh Magazine, Volume 59, No. 364, February 1846 • Various

... Greeks before the school of Alexandria, is that of the summer solstice of the year B.C. 432. by Meton and Euctemon. We have, for the first time, in that school, a combined system of observations made with instruments for the measurement of angles, and calculated by trigonometrical methods. Astronomy then took a form which subsequent ages ...
— History of the Conflict Between Religion and Science • John William Draper

... especially to the Himalayan region (where they were the first Europeans to cross the Kuenlun Mountains), in order to correlate the instruments and observations of the several magnetic surveys of India. But they enlarged the scope of their mission by professing to correct the great trigonometrical survey, while the contract with them was so loosely drawn up that they had practically a roving commission in science, to make researches and publish the results—up to nine volumes—in all manner of subjects, which in fact ranged ...
— The Life and Letters of Thomas Henry Huxley Volume 1 • Leonard Huxley

... planet.'' In that year Mars made one of its nearest approaches to the earth, and was so situated in its orbit that it could be observed to great advantage from the northern hemisphere of the earth. The celebrated Italian astronomer, Schiaparelli, took advantage of this opportunity to make a trigonometrical survey of the surface of Mars — as coolly and confidently as if he were not taking his sights across a thirty-five-million-mile gulf of empty space — and in the course of this survey he was astonished to ...
— Curiosities of the Sky • Garrett Serviss

... on several occasions repeated by the Brahmachari in the presence (among others) of Babu Dwijender Nath Tagore of Jorasanko, Calcutta; Babu Cally Mohan Ghose of the Trigonometrical Surcey of India, Dehradun; Babu Cally Cumar Chatterij of the same place; Babu Gopi Mohan Ghosh of Dacca; Babu Priya Nath Sastri, clerk to Babu Devender Nath Tagore, and the writer. Comments would here seem ...
— Five Years Of Theosophy • Various

... who examined the Griza pyramids in 1881, and carefully measured them all up and finally settled their trigonometrical relation, came to the conclusion that Lepsius's theory was entirely erroneous, and that every pyramid was built and now stands as it was ...
— History Of Egypt, Chaldaea, Syria, Babylonia, And Assyria In The Light Of Recent Discovery • L.W. King and H.R. Hall

... essential service to the cause of science. They were 3485 feet above the most elevated point which the learned Condamine, who had hitherto ascended highest, reached in 1745, but were still 2140 feet below the loftiest summit of the mountain. They determined, by a series of strict trigonometrical observations, the height of the chief ...
— Blackwood's Edinburgh Magazine, Volume 62, Number 361, November, 1845. • Various

... the fist, proved to me that the chief of the Franciscans, notwithstanding his vow of humility, had taken offence at the want of ceremony in my fellow visitors. I was going to complain of the abrupt way in which he had treated me, but I had the necessities of our trigonometrical operations before my eyes, ...
— Biographies of Distinguished Scientific Men • Francois Arago

... something like distant terms of equality, up the St. Nicholas valley, it presented itself under the outline Fig. 34, which seems to be conclusive for the supremacy of the point e, between a and b in Fig. 33. But the impossibility of determining, at the foot of it, without a trigonometrical observation, which is the top of such an apparent peak as the Matterhorn, may serve to show the reader how little the eye is to be trusted for the verification ...
— Modern Painters, Volume IV (of V) • John Ruskin

... subject for a philosophical writer a history of human projects which were never carried out; the historian of modern Japan finds these at every turn. Where, for example, are the results of the great surveys, trigonometrical and others, which were commenced in Yezo and the main island about ten years ago? A large, expensive, but highly competent foreign staff was engaged, and worked for a few years; but suddenly the whole survey department was swept ...
— Scientific American Supplement, No. 392, July 7, 1883 • Various



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