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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 Cofunction ： ウィキペディア英語版 Cofunction In mathematics, a function ''f'' is cofunction of a function ''g'' if ''f''(''A'') = ''g''(''B'') whenever ''A'' and ''B'' are complementary angles. This definition typically applies to trigonometric functions.〔.〕 For example, sine and cosine are cofunctions of each other (hence the "co" in "cosine"): - A\right) = \cos(A) | $\backslash cos\backslash left(\backslash frac\; -\; A\backslash right)\; =\; \backslash sin(A)$ |- |} The same is true of secant and cosecant and of tangent and cotangent: - A\right) = \csc(A) | $\backslash csc\backslash left(\backslash frac\; -\; A\backslash right)\; =\; \backslash sec(A)$ |- | $\backslash tan\backslash left(\backslash frac\; -\; A\backslash right)\; =\; \backslash cot(A)$ | $\backslash cot\backslash left(\backslash frac\; -\; A\backslash right)\; =\; \backslash tan(A)$ |- |} These equations are also known as the cofunction identities.〔 This also holds true for the coversine (coversed sine, cvs), covercosine (coversed cosine, cvc), hacoversine (half-coversed sine, hcv), hacovercosine (half-coversed cosine, hcc) and excosecant (exterior cosecant, exc): - A\right) = \operatorname(A) |- | $\backslash operatorname\backslash left(\backslash frac\; -\; A\backslash right)\; =\; \backslash operatorname(A)$ |- | $\backslash operatorname\backslash left(\backslash frac\; -\; A\backslash right)\; =\; \backslash operatorname(A)$ |- | $\backslash operatorname\backslash left(\backslash frac\; -\; A\backslash right)\; =\; \backslash operatorname(A)$ |- | $\backslash operatorname\backslash left(\backslash frac\; -\; A\backslash right)\; =\; \backslash operatorname(A)$ |- |} ==See also== *Vercosine (versed cosine) *Havercosine (half-versed cosine) *Covariance 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「Cofunction」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.