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 | | http://functions.wolfram.com/02.03.26.0002.01 | 
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 | | Pi == 88 ArcTan[1/28] + 8 ArcTan[1/443] - 20 ArcTan[1/1393] - 
  40 ArcTan[1/11018] | 
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 | | Cell[BoxData[RowBox[List["\[Pi]", "\[Equal]", RowBox[List[RowBox[List["88", " ", RowBox[List["ArcTan", "[", FractionBox["1", "28"], "]"]]]], "+", RowBox[List["8", " ", RowBox[List["ArcTan", "[", FractionBox["1", "443"], "]"]]]], "-", RowBox[List["20", " ", RowBox[List["ArcTan", "[", FractionBox["1", "1393"], "]"]]]], "-", RowBox[List["40", " ", RowBox[List["ArcTan", "[", FractionBox["1", "11018"], "]"]]]]]]]]]] | 
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   <math xmlns='http://www.w3.org/1998/Math/MathML' mathematica:form='TraditionalForm' xmlns:mathematica='http://www.wolfram.com/XML/'>  <semantics>  <mrow>  <mi> π </mi>  <mo> ⩵ </mo>  <mrow>  <mrow>  <mn> 88 </mn>  <mo> ⁢ </mo>  <mrow>  <msup>  <mi> tan </mi>  <mrow>  <mo> - </mo>  <mn> 1 </mn>  </mrow>  </msup>  <mo> ( </mo>  <mfrac>  <mn> 1 </mn>  <mn> 28 </mn>  </mfrac>  <mo> ) </mo>  </mrow>  </mrow>  <mo> + </mo>  <mrow>  <mn> 8 </mn>  <mo> ⁢ </mo>  <mrow>  <msup>  <mi> tan </mi>  <mrow>  <mo> - </mo>  <mn> 1 </mn>  </mrow>  </msup>  <mo> ( </mo>  <mfrac>  <mn> 1 </mn>  <mn> 443 </mn>  </mfrac>  <mo> ) </mo>  </mrow>  </mrow>  <mo> - </mo>  <mrow>  <mn> 20 </mn>  <mo> ⁢ </mo>  <mrow>  <msup>  <mi> tan </mi>  <mrow>  <mo> - </mo>  <mn> 1 </mn>  </mrow>  </msup>  <mo> ( </mo>  <mfrac>  <mn> 1 </mn>  <mn> 1393 </mn>  </mfrac>  <mo> ) </mo>  </mrow>  </mrow>  <mo> - </mo>  <mrow>  <mn> 40 </mn>  <mo> ⁢ </mo>  <mrow>  <msup>  <mi> tan </mi>  <mrow>  <mo> - </mo>  <mn> 1 </mn>  </mrow>  </msup>  <mo> ( </mo>  <mfrac>  <mn> 1 </mn>  <mn> 11018 </mn>  </mfrac>  <mo> ) </mo>  </mrow>  </mrow>  </mrow>  </mrow>  <annotation-xml encoding='MathML-Content'>  <apply>  <eq />  <pi />  <apply>  <plus />  <apply>  <times />  <cn type='integer'> 88 </cn>  <apply>  <arctan />  <cn type='rational'> 1 <sep /> 28 </cn>  </apply>  </apply>  <apply>  <times />  <cn type='integer'> 8 </cn>  <apply>  <arctan />  <cn type='rational'> 1 <sep /> 443 </cn>  </apply>  </apply>  <apply>  <times />  <cn type='integer'> -1 </cn>  <apply>  <times />  <cn type='integer'> 20 </cn>  <apply>  <arctan />  <cn type='rational'> 1 <sep /> 1393 </cn>  </apply>  </apply>  </apply>  <apply>  <times />  <cn type='integer'> -1 </cn>  <apply>  <times />  <cn type='integer'> 40 </cn>  <apply>  <arctan />  <cn type='rational'> 1 <sep /> 11018 </cn>  </apply>  </apply>  </apply>  </apply>  </apply>  </annotation-xml>  </semantics>  </math> 
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 | | Cell[BoxData[RowBox[List[RowBox[List["HoldPattern", "[", "\[Pi]", "]"]], "\[RuleDelayed]", RowBox[List[RowBox[List["88", " ", RowBox[List["ArcTan", "[", FractionBox["1", "28"], "]"]]]], "+", RowBox[List["8", " ", RowBox[List["ArcTan", "[", FractionBox["1", "443"], "]"]]]], "-", RowBox[List["20", " ", RowBox[List["ArcTan", "[", FractionBox["1", "1393"], "]"]]]], "-", RowBox[List["40", " ", RowBox[List["ArcTan", "[", FractionBox["1", "11018"], "]"]]]]]]]]]] | 
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 | | Date Added to functions.wolfram.com (modification date) | 
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