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%I #26 Aug 21 2023 12:17:16
%S 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,
%T 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,
%U 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
%N Decimal expansion of sine of 50 degrees.
%C A cubic number with denominator 2 and minimal polynomial 8x^3 - 6x + 1. - _Charles R Greathouse IV_, Nov 05 2017
%H Ivan Panchenko, <a href="/A019859/b019859.txt">Table of n, a(n) for n = 0..1000</a>
%H <a href="/index/Al#algebraic_03">Index entries for algebraic numbers, degree 3</a>
%F Equals cos(2*Pi/9) = 2F1(5/6,1/6;1/2;3/4) / 2. - _R. J. Mathar_, Oct 27 2008
%F Equals 2*A019834*A019874. - _R. J. Mathar_, Jan 17 2021
%e 0.76604444...
%t RealDigits[ Cos[ 2Pi/9], 10, 111][[1]] (* _Robert G. Wilson v_ *)
%t RealDigits[Sin[50 Degree],10,120][[1]] (* _Harvey P. Dale_, Dec 19 2012 *)
%o (PARI) sin(5/18*Pi) \\ _Charles R Greathouse IV_, Nov 05 2017
%K nonn,cons
%O 0,1
%A _N. J. A. Sloane_
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