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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク exsecant ： ウィキペディア英語版 exsecant The exsecant (exsec, exs) and excosecant (excosec, excsc, exc) are trigonometric functions defined in terms of the secant and cosecant functions. They were important in fields such as surveying, railway engineering, civil engineering, astronomy, and spherical trigonometry and could help improve accuracy, but are rarely used today except for to simplify some calculations. ==Exsecant== The exsecant,〔trigonometric function defined in terms of the secant function sec(θ):〔〔〔 :$\backslash operatorname(\backslash theta)\; =\; \backslash sec(\backslash theta)\; -\; 1\; =\; \backslash frac\; -\; 1.\; \backslash ,$〔〔〔 The name ''exsecant'' can be understood from a graphical construction of the various trigonometric functions from a unit circle, such as was used historically. sec(θ) is the secant line $\backslash overline$, and the exsecant is the portion $\backslash overline$ of this secant that lies ''exterior'' to the circle (''ex'' is Latin for ''out of''). 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「exsecant」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.