Back دوال مثلثية عكسية Arabic Tərs triqonometrik funksiyalar Azerbaijani Кире тригонометрик функциялар Bashkir Обратни тригонометрични функции Bulgarian বিপরীত ত্রিকোণমিতিক অপেক্ষক Bengali/Bangla Inverses de les funcions trigonomètriques Catalan فانکشنە سێگۆشەیییە ھەڵگەڕاوەکان CKB Cyklometrická funkce Czech Тригонометрилле кутăнла функцисем CV Arcus-funktioner Danish
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In mathematics, the inverse trigonometric functions (occasionally also called arcus functions,[1][2][3][4][5] antitrigonometric functions[6] or cyclometric functions[7][8][9]) are the inverse functions of the trigonometric functions (with suitably restricted domains). Specifically, they are the inverses of the sine, cosine, tangent, cotangent, secant, and cosecant functions,[10] and are used to obtain an angle from any of the angle's trigonometric ratios. Inverse trigonometric functions are widely used in engineering, navigation, physics, and geometry.
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Dörrie_1965was invoked but never defined (see the help page). - ^ Weisstein, Eric W. "Inverse Trigonometric Functions". mathworld.wolfram.com. Retrieved 29 August 2020.