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 Sin

 http://functions.wolfram.com/01.06.27.0038.01

 Input Form

 Sin[z] == z Sqrt[-(1/z^2)] (Sqrt[1 - Sec[z]^2]/Sec[z]) /; Im[z] != 0

 Standard Form

 Cell[BoxData[RowBox[List[RowBox[List[RowBox[List["Sin", "[", "z", "]"]], "\[Equal]", RowBox[List["z", " ", SqrtBox[RowBox[List["-", FractionBox["1", SuperscriptBox["z", "2"]]]]], FractionBox[RowBox[List[" ", SqrtBox[RowBox[List["1", "-", SuperscriptBox[RowBox[List["Sec", "[", "z", "]"]], "2"]]]]]], RowBox[List["Sec", "[", "z", "]"]]]]]]], "/;", RowBox[List[RowBox[List["Im", "[", "z", "]"]], "\[NotEqual]", "0"]]]]]]

 MathML Form

 sin ( z ) z - 1 z 2 1 - sec 2 ( z ) sec ( z ) /; Im ( z ) 0 Condition z z -1 1 z 2 -1 1 2 1 -1 z 2 1 2 z -1 z 0 [/itex]

 Rule Form

 Cell[BoxData[RowBox[List[RowBox[List["HoldPattern", "[", RowBox[List["Sin", "[", "z_", "]"]], "]"]], "\[RuleDelayed]", RowBox[List[FractionBox[RowBox[List["z", " ", SqrtBox[RowBox[List["-", FractionBox["1", SuperscriptBox["z", "2"]]]]], " ", SqrtBox[RowBox[List["1", "-", SuperscriptBox[RowBox[List["Sec", "[", "z", "]"]], "2"]]]]]], RowBox[List["Sec", "[", "z", "]"]]], "/;", RowBox[List[RowBox[List["Im", "[", "z", "]"]], "\[NotEqual]", "0"]]]]]]]]

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

 2001-10-29