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 Tan

 http://functions.wolfram.com/01.08.16.0057.01

 Input Form

 a Tan[z] + b Cot[z] == (a + b) Csc[2 z] + (b - a) Cot[2 z]

 Standard Form

 Cell[BoxData[RowBox[List[RowBox[List[RowBox[List["a", " ", RowBox[List["Tan", "[", "z", "]"]]]], "+", RowBox[List["b", " ", RowBox[List["Cot", "[", "z", "]"]]]]]], "\[Equal]", RowBox[List[RowBox[List[RowBox[List["(", RowBox[List["a", "+", "b"]], ")"]], RowBox[List["Csc", "[", RowBox[List["2", "z"]], "]"]]]], "+", RowBox[List[RowBox[List["(", RowBox[List["b", " ", "-", "a"]], ")"]], RowBox[List["Cot", "[", RowBox[List["2", " ", "z"]], "]"]]]]]]]]]]

 MathML Form

 a tan ( z ) + b cot ( z ) ( b - a ) cot ( 2 z ) + ( a + b ) csc ( 2 z ) a z b z b -1 a 2 z a b 2 z [/itex]

 Rule Form

 Cell[BoxData[RowBox[List[RowBox[List["HoldPattern", "[", RowBox[List[RowBox[List["a_", " ", RowBox[List["Tan", "[", "z_", "]"]]]], "+", RowBox[List["b_", " ", RowBox[List["Cot", "[", "z_", "]"]]]]]], "]"]], "\[RuleDelayed]", RowBox[List[RowBox[List[RowBox[List["(", RowBox[List["a", "+", "b"]], ")"]], " ", RowBox[List["Csc", "[", RowBox[List["2", " ", "z"]], "]"]]]], "+", RowBox[List[RowBox[List["(", RowBox[List["b", "-", "a"]], ")"]], " ", RowBox[List["Cot", "[", RowBox[List["2", " ", "z"]], "]"]]]]]]]]]]

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

 2003-08-21