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Cos




Mathematica Notation

Traditional Notation









Elementary Functions > Cos[z] > Complex characteristics > Argument





http://functions.wolfram.com/01.07.19.0012.01









  


  








Input Form





Arg[Cos[z]] == -ArcTan[Tan[Re[z]] Tanh[Im[z]]] + (1/2) Pi (1 - Sign[Cos[Re[z]] Cosh[Im[z]]]) Sign[1/2 - Sign[Sin[Re[z]] Sinh[Im[z]]]]








Standard Form





Cell[BoxData[RowBox[List[RowBox[List["Arg", "[", RowBox[List["Cos", "[", "z", "]"]], "]"]], "\[Equal]", RowBox[List[RowBox[List["-", RowBox[List["ArcTan", "[", RowBox[List[RowBox[List["Tan", "[", RowBox[List["Re", "[", "z", "]"]], "]"]], " ", RowBox[List["Tanh", "[", RowBox[List["Im", "[", "z", "]"]], "]"]]]], "]"]]]], "+", RowBox[List[FractionBox["1", "2"], " ", "\[Pi]", " ", RowBox[List["(", RowBox[List["1", "-", RowBox[List["Sign", "[", RowBox[List[RowBox[List["Cos", "[", RowBox[List["Re", "[", "z", "]"]], "]"]], " ", RowBox[List["Cosh", "[", RowBox[List["Im", "[", "z", "]"]], "]"]]]], "]"]]]], ")"]], " ", RowBox[List["Sign", "[", RowBox[List[FractionBox["1", "2"], "-", RowBox[List["Sign", "[", RowBox[List[RowBox[List["Sin", "[", RowBox[List["Re", "[", "z", "]"]], "]"]], " ", RowBox[List["Sinh", "[", RowBox[List["Im", "[", "z", "]"]], "]"]]]], "]"]]]], "]"]]]]]]]]]]








MathML Form







<math xmlns='http://www.w3.org/1998/Math/MathML' mathematica:form='TraditionalForm' xmlns:mathematica='http://www.wolfram.com/XML/'> <semantics> <mrow> <mrow> <mi> arg </mi> <mo> &#8289; </mo> <mo> ( </mo> <mrow> <mi> cos </mi> <mo> &#8289; </mo> <mo> ( </mo> <mi> z </mi> <mo> ) </mo> </mrow> <mo> ) </mo> </mrow> <mo> &#10869; </mo> <mrow> <mrow> <mfrac> <mi> &#960; </mi> <mn> 2 </mn> </mfrac> <mo> &#8290; </mo> <mrow> <mo> ( </mo> <mrow> <mn> 1 </mn> <mo> - </mo> <mrow> <mi> sgn </mi> <mo> &#8289; </mo> <mo> ( </mo> <mrow> <mrow> <mi> cos </mi> <mo> &#8289; </mo> <mo> ( </mo> <mrow> <mi> Re </mi> <mo> &#8289; </mo> <mo> ( </mo> <mi> z </mi> <mo> ) </mo> </mrow> <mo> ) </mo> </mrow> <mo> &#8290; </mo> <mrow> <mi> cosh </mi> <mo> &#8289; </mo> <mo> ( </mo> <mrow> <mi> Im </mi> <mo> &#8289; </mo> <mo> ( </mo> <mi> z </mi> <mo> ) </mo> </mrow> <mo> ) </mo> </mrow> </mrow> <mo> ) </mo> </mrow> </mrow> <mo> ) </mo> </mrow> <mo> &#8290; </mo> <mrow> <mi> sgn </mi> <mo> &#8289; </mo> <mo> ( </mo> <mrow> <mfrac> <mn> 1 </mn> <mn> 2 </mn> </mfrac> <mo> - </mo> <mrow> <mi> sgn </mi> <mo> &#8289; </mo> <mo> ( </mo> <mrow> <mrow> <mi> sin </mi> <mo> &#8289; </mo> <mo> ( </mo> <mrow> <mi> Re </mi> <mo> &#8289; </mo> <mo> ( </mo> <mi> z </mi> <mo> ) </mo> </mrow> <mo> ) </mo> </mrow> <mo> &#8290; </mo> <mrow> <mi> sinh </mi> <mo> &#8289; </mo> <mo> ( </mo> <mrow> <mi> Im </mi> <mo> &#8289; </mo> <mo> ( </mo> <mi> z </mi> <mo> ) </mo> </mrow> <mo> ) </mo> </mrow> </mrow> <mo> ) </mo> </mrow> </mrow> <mo> ) </mo> </mrow> </mrow> <mo> - </mo> <mrow> <msup> <mi> tan </mi> <mrow> <mo> - </mo> <mn> 1 </mn> </mrow> </msup> <mo> ( </mo> <mrow> <mrow> <mi> tan </mi> <mo> &#8289; </mo> <mo> ( </mo> <mrow> <mi> Re </mi> <mo> &#8289; </mo> <mo> ( </mo> <mi> z </mi> <mo> ) </mo> </mrow> <mo> ) </mo> </mrow> <mo> &#8290; </mo> <mrow> <mi> tanh </mi> <mo> &#8289; </mo> <mo> ( </mo> <mrow> <mi> Im </mi> <mo> &#8289; </mo> <mo> ( </mo> <mi> z </mi> <mo> ) </mo> </mrow> <mo> ) </mo> </mrow> </mrow> <mo> ) </mo> </mrow> </mrow> </mrow> <annotation-xml encoding='MathML-Content'> <apply> <eq /> <apply> <arg /> <apply> <cos /> <ci> z </ci> </apply> </apply> <apply> <plus /> <apply> <times /> <apply> <times /> <pi /> <apply> <power /> <cn type='integer'> 2 </cn> <cn type='integer'> -1 </cn> </apply> </apply> <apply> <plus /> <cn type='integer'> 1 </cn> <apply> <times /> <cn type='integer'> -1 </cn> <apply> <ci> Sign </ci> <apply> <times /> <apply> <cos /> <apply> <real /> <ci> z </ci> </apply> </apply> <apply> <cosh /> <apply> <imaginary /> <ci> z </ci> </apply> </apply> </apply> </apply> </apply> </apply> <apply> <ci> Sign </ci> <apply> <plus /> <cn type='rational'> 1 <sep /> 2 </cn> <apply> <times /> <cn type='integer'> -1 </cn> <apply> <ci> Sign </ci> <apply> <times /> <apply> <sin /> <apply> <real /> <ci> z </ci> </apply> </apply> <apply> <sinh /> <apply> <imaginary /> <ci> z </ci> </apply> </apply> </apply> </apply> </apply> </apply> </apply> </apply> <apply> <times /> <cn type='integer'> -1 </cn> <apply> <arctan /> <apply> <times /> <apply> <tan /> <apply> <real /> <ci> z </ci> </apply> </apply> <apply> <tanh /> <apply> <imaginary /> <ci> z </ci> </apply> </apply> </apply> </apply> </apply> </apply> </apply> </annotation-xml> </semantics> </math>










Rule Form





Cell[BoxData[RowBox[List[RowBox[List["HoldPattern", "[", RowBox[List["Arg", "[", RowBox[List["Cos", "[", "z_", "]"]], "]"]], "]"]], "\[RuleDelayed]", RowBox[List[RowBox[List["-", RowBox[List["ArcTan", "[", RowBox[List[RowBox[List["Tan", "[", RowBox[List["Re", "[", "z", "]"]], "]"]], " ", RowBox[List["Tanh", "[", RowBox[List["Im", "[", "z", "]"]], "]"]]]], "]"]]]], "+", RowBox[List[FractionBox["1", "2"], " ", "\[Pi]", " ", RowBox[List["(", RowBox[List["1", "-", RowBox[List["Sign", "[", RowBox[List[RowBox[List["Cos", "[", RowBox[List["Re", "[", "z", "]"]], "]"]], " ", RowBox[List["Cosh", "[", RowBox[List["Im", "[", "z", "]"]], "]"]]]], "]"]]]], ")"]], " ", RowBox[List["Sign", "[", RowBox[List[FractionBox["1", "2"], "-", RowBox[List["Sign", "[", RowBox[List[RowBox[List["Sin", "[", RowBox[List["Re", "[", "z", "]"]], "]"]], " ", RowBox[List["Sinh", "[", RowBox[List["Im", "[", "z", "]"]], "]"]]]], "]"]]]], "]"]]]]]]]]]]


Date Added to functions.wolfram.com (modification date)





2007-05-02