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 A019859 Decimal expansion of sine of 50 degrees. 6
 7, 6, 6, 0, 4, 4, 4, 4, 3, 1, 1, 8, 9, 7, 8, 0, 3, 5, 2, 0, 2, 3, 9, 2, 6, 5, 0, 5, 5, 5, 4, 1, 6, 6, 7, 3, 9, 3, 5, 8, 3, 2, 4, 5, 7, 0, 8, 0, 3, 9, 5, 2, 4, 5, 8, 5, 4, 0, 4, 5, 2, 8, 4, 6, 4, 2, 1, 5, 5, 3, 8, 8, 8, 5, 6, 8, 7, 4, 7, 2, 3, 5, 2, 8, 2, 2, 9, 2, 7, 6, 6, 8, 0, 5, 4, 8, 4, 9, 3 (list; constant; graph; refs; listen; history; text; internal format)
 OFFSET 0,1 COMMENTS A cubic number with denominator 2 and minimal polynomial 8x^3 - 6x + 1. - Charles R Greathouse IV, Nov 05 2017 LINKS Ivan Panchenko, Table of n, a(n) for n = 0..1000 FORMULA Equals cos(2*Pi/9) = 2F1(5/6,1/6;1/2;3/4) / 2. - R. J. Mathar, Oct 27 2008 Equals 2*A019834*A019874. - R. J. Mathar, Jan 17 2021 EXAMPLE 0.76604444... MATHEMATICA RealDigits[ Cos[ 2Pi/9], 10, 111][[1]] (* Robert G. Wilson v *) RealDigits[Sin[50 Degree], 10, 120][[1]] (* Harvey P. Dale, Dec 19 2012 *) PROG (PARI) sin(5/18*Pi) \\ Charles R Greathouse IV, Nov 05 2017 CROSSREFS Sequence in context: A092874 A198109 A059751 * A188736 A265304 A102769 Adjacent sequences:  A019856 A019857 A019858 * A019860 A019861 A019862 KEYWORD nonn,cons AUTHOR STATUS approved

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Last modified January 21 00:11 EST 2022. Contains 350473 sequences. (Running on oeis4.)