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 Csc

 http://functions.wolfram.com/01.10.16.0033.01

 Input Form

 Csc[z/2] == Sqrt[2 z^2]/(z Sqrt[1 - Cos[z]]) /; Abs[Re[z]] < 2 Pi

 Standard Form

 Cell[BoxData[RowBox[List[RowBox[List[RowBox[List["Csc", "[", FractionBox["z", "2"], "]"]], "\[Equal]", FractionBox[SqrtBox[RowBox[List["2", " ", SuperscriptBox["z", "2"]]]], RowBox[List["z", " ", SqrtBox[RowBox[List["1", "-", RowBox[List["Cos", "[", "z", "]"]]]]]]]]]], "/;", RowBox[List[RowBox[List["Abs", "[", RowBox[List["Re", "[", "z", "]"]], "]"]], "<", RowBox[List["2", " ", "\[Pi]"]]]]]]]]

 MathML Form

 csc ( z 2 ) 2 z 2 z 1 - cos ( z ) /; "\[LeftBracketingBar]" Re ( z ) "\[RightBracketingBar]" < 2 π Condition z 2 -1 2 z 2 1 2 z 1 -1 z 1 2 -1 z 2 [/itex]

 Rule Form

 Cell[BoxData[RowBox[List[RowBox[List["HoldPattern", "[", RowBox[List["Csc", "[", FractionBox["z_", "2"], "]"]], "]"]], "\[RuleDelayed]", RowBox[List[FractionBox[SqrtBox[RowBox[List["2", " ", SuperscriptBox["z", "2"]]]], RowBox[List["z", " ", SqrtBox[RowBox[List["1", "-", RowBox[List["Cos", "[", "z", "]"]]]]]]]], "/;", RowBox[List[RowBox[List["Abs", "[", RowBox[List["Re", "[", "z", "]"]], "]"]], "<", RowBox[List["2", " ", "\[Pi]"]]]]]]]]]]

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

 2001-10-29