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Sigma KEE - ArcTangentFn
ArcTangentFn

appearance as argument number 1
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(documentation ArcTangentFn EnglishLanguage "The inverse of TangentFn.") Merge.kif 5182-5182
(domain ArcTangentFn 1 RealNumber) Merge.kif 5180-5180 The number 1 argument of arctangent is an instance of real number
(instance ArcTangentFn TotalValuedRelation) Merge.kif 5179-5179 Arctangent is an instance of total valued relation
(instance ArcTangentFn UnaryFunction) Merge.kif 5178-5178 Arctangent is an instance of unary function
(range ArcTangentFn RealNumber) Merge.kif 5181-5181 The range of arctangent is an instance of real number

appearance as argument number 2
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(format EnglishLanguage ArcTangentFn "the arctan of %1") Merge.kif 5183-5183
(termFormat EnglishLanguage ArcTangentFn "arctangent") Merge.kif 5184-5184

statement
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(equal
    (ArcTangentFn
        (TangentFn ?X)) ?X)
Merge.kif 5186-5186 The arctan of the tangent of a real number is equal to the real number


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