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A019973
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Decimal expansion of tangent of 75 degrees.
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18
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3, 7, 3, 2, 0, 5, 0, 8, 0, 7, 5, 6, 8, 8, 7, 7, 2, 9, 3, 5, 2, 7, 4, 4, 6, 3, 4, 1, 5, 0, 5, 8, 7, 2, 3, 6, 6, 9, 4, 2, 8, 0, 5, 2, 5, 3, 8, 1, 0, 3, 8, 0, 6, 2, 8, 0, 5, 5, 8, 0, 6, 9, 7, 9, 4, 5, 1, 9, 3, 3, 0, 1, 6, 9, 0, 8, 8, 0, 0, 0, 3, 7, 0, 8, 1, 1, 4, 6, 1, 8, 6, 7, 5, 7, 2, 4, 8, 5, 7
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OFFSET
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1,1
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COMMENTS
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An equivalent definition of this sequence: decimal expansion of x > 1 satisfying x^2 - 4*x + 1 = 0. - Arkadiusz Wesolowski, Nov 28 2011
Length of the second longest diagonal in a regular 12-gon with unit side. - Mohammed Yaseen, Dec 13 2020
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LINKS
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FORMULA
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EXAMPLE
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3.732050807568877293527446341505872366942805253810380628...
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MATHEMATICA
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RealDigits[Tan[75 Degree], 10, 120][[1]] (* Harvey P. Dale, Nov 08 2011 *)
RealDigits[2+Sqrt[3], 10, 100][[1]] (* G. C. Greubel, Nov 20 2018 *)
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PROG
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(Magma) SetDefaultRealField(RealField(100)); 2 + Sqrt(3); // G. C. Greubel, Nov 20 2018
(Sage) numerical_approx(2+sqrt(3), digits=100) # G. C. Greubel, Nov 20 2018
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CROSSREFS
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KEYWORD
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AUTHOR
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EXTENSIONS
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Checked by Neven Juric (neven.juric(AT)apis-it.hr), Feb 04 2008
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STATUS
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approved
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