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 Tan

 http://functions.wolfram.com/01.08.16.0065.01

 Input Form

 Tan[a] - I Coth[b] == (-I) Cos[a - I b] Sec[a] Csch[b]

 Standard Form

 Cell[BoxData[RowBox[List[RowBox[List[RowBox[List["Tan", "[", "a", "]"]], "-", RowBox[List["\[ImaginaryI]", " ", RowBox[List["Coth", "[", "b", "]"]]]]]], "\[Equal]", RowBox[List[RowBox[List["-", "\[ImaginaryI]"]], " ", RowBox[List["Cos", "[", RowBox[List["a", "-", RowBox[List["\[ImaginaryI]", " ", "b"]]]], "]"]], " ", RowBox[List["Sec", "[", "a", "]"]], " ", RowBox[List["Csch", "[", "b", "]"]]]]]]]]

 MathML Form

 tan ( a ) - coth ( b ) - cos ( a - b ) sec ( a ) csch ( b ) a -1 b -1 a -1 b a b [/itex]

 Rule Form

 Cell[BoxData[RowBox[List[RowBox[List["HoldPattern", "[", RowBox[List[RowBox[List["Tan", "[", "a_", "]"]], "-", RowBox[List["\[ImaginaryI]", " ", RowBox[List["Coth", "[", "b_", "]"]]]]]], "]"]], "\[RuleDelayed]", RowBox[List[RowBox[List["-", "\[ImaginaryI]"]], " ", RowBox[List["Cos", "[", RowBox[List["a", "-", RowBox[List["\[ImaginaryI]", " ", "b"]]]], "]"]], " ", RowBox[List["Sec", "[", "a", "]"]], " ", RowBox[List["Csch", "[", "b", "]"]]]]]]]]

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

 2003-08-21