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In mathematics, the inverse trigonometric functions (occasionally also called antitrigonometric,[1] cyclometric,[2] or arcus functions[3]) are the inverse functions of the trigonometric functions, under suitably restricted domains. Specifically, they are the inverses of the sine, cosine, tangent, cotangent, secant, and cosecant functions,[4] 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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cyclometricwas invoked but never defined (see the help page). - ^ Cite error: The named reference
arcuswas invoked but never defined (see the help page). - ^ Weisstein, Eric W. "Inverse Trigonometric Functions". mathworld.wolfram.com. Retrieved 2020-08-29.