正矢
參考文獻

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The Āryabhaṭīya by Āryabhaṭa
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1 2 3 4  Cajori, Florian.  2 2 (3rd corrected printing of 1929 issue). Chicago, USA: Open court publishing company. 1952: 172 [March 1929]  [2015-11-11]. ISBN 978-1-60206-714-1. 1602067147. The haversine first appears in the tables of logarithmic versines of José de Mendoza y Rios (Madrid, 1801, also 1805, 1809), and later in a treatise on navigation of James Inman (1821). See J. D. White in Nautical Magazine (February and July 1926).  (NB. ISBN and link for reprint of 2nd edition by Cosimo, Inc., New York, USA, 2013.)
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↑  Fulst, Otto. . Lütjen, Johannes; Stein, Walter; Zwiebler, Gerhard  (编).  24. Bremen, Germany: Arthur Geist Verlag. 1972 （德语）.
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↑  H. B. Goodwin, The haversine in nautical astronomy, Naval Institute Proceedings, vol. 36, no. 3 (1910), pp. 735–746: Evidently if a Table of Haversines is employed we shall be saved in the first instance the trouble of dividing the sum of the logarithms by two, and in the second place of multiplying the angle taken from the tables by the same number.  This is the special advantage of the form of table first introduced by Professor Inman, of the Portsmouth Royal Navy College, nearly a century ago.
↑  W. W. Sheppard and C. C. Soule, Practical navigation (World Technical Institute: Jersey City, 1922).
↑  E. R. Hedrick, Logarithmic and Trigonometric Tables (Macmillan, New York, 1913).
↑  White, J. D. . Nautical Magazine. February 1926.  (NB. According to Cajori, 1929, this journal has a discussion on the origin of haversines.)
↑  White, J. D. . Nautical Magazine. July 1926.  (NB. According to Cajori, 1929, this journal has a discussion on the origin of haversines.)
↑  . 牛津英語詞典 (第三版). 牛津大學出版社. 2005-09 （英语）.
↑  Stark, Bruce D.  2. Starpath Publications. 1997 [1995]  [2015-12-02]. ISBN 978-0914025214. 091402521X. （原始内容存档于2023-02-26）.  (NB. Contains a table of Gaussian logarithms lg(1+10−x).)
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1 2 3 4 5 6  van den Doel, Kees. . JASS - Java Audio Synthesis System. 1.25. 2010-01-25  [2015-10-26]. （原始内容存档于2007-09-02）.
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↑  Woodward, Ernest. . Problem Solvers Solution Guides. Research & Education Association (REA). December 1978: 359. ISBN 978-0-87891-510-1.
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↑  Nair, P. N. Bhaskaran. . Rail International (International Railway Congress Association, International Union of Railways). 1972, 3 (3): 159–166. ISSN 0020-8442. OCLC 751627806.
Boyer, Carl B.  2nd. New York: Wiley. 1991.
. 牛津英語詞典 (第三版). 牛津大學出版社. 2005-09 （英语）.
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. 牛津英語詞典 (第三版). 牛津大學出版社. 2005-09 （英语）.
Cites coinage by Prof. Jas. Inman, D. D., in his Navigation and Nautical Astronomy, 3rd ed. (1835).
Nair, Bhaskaran. . Rail International. 1972, 3 (3): 159–166. ISSN 0020-8442.
埃里克·韦斯坦因. . MathWorld.