

A019815


Decimal expansion of sine of 6 degrees.


1



1, 0, 4, 5, 2, 8, 4, 6, 3, 2, 6, 7, 6, 5, 3, 4, 7, 1, 3, 9, 9, 8, 3, 4, 1, 5, 4, 8, 0, 2, 4, 9, 8, 1, 1, 9, 0, 8, 0, 6, 5, 5, 8, 6, 9, 4, 7, 4, 5, 9, 3, 1, 1, 3, 9, 9, 3, 2, 7, 5, 4, 7, 6, 7, 1, 2, 4, 8, 4, 6, 5, 0, 6, 9, 3, 1, 8, 0, 0, 4, 6, 8, 2, 8, 1, 8, 0, 3, 9, 8, 7, 9, 8, 6, 0, 4, 4, 2, 6
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OFFSET

0,3


COMMENTS

Decimal expansion of 1/8 (1  Sqrt[5] + Sqrt[6 (5  Sqrt[5])]) [From Artur Jasinski, Oct 28 2008]


LINKS

Ivan Panchenko, Table of n, a(n) for n = 0..1000
Anonymous, Exact trigonometric constants, Wikipedia


FORMULA

Equals cos(7*Pi/15) = cos(8*Pi/15) = 2F1(6/5,1/5;1/2;3/4) / 2 =  2F1(13/10,3/10;1/2;3/4) / 2 . [From R. J. Mathar, Oct 27 2008]


MATHEMATICA

First[RealDigits[1/8 (1  Sqrt[5] + Sqrt[6 (5  Sqrt[5])]), 10, 100]] [From Artur Jasinski, Oct 28 2008]
RealDigits[Sin[6 Degree], 10, 120][[1]] (* Harvey P. Dale, Apr 27 2012 *)


CROSSREFS

Sequence in context: A118472 A194880 A111624 * A200684 A046572 A046574
Adjacent sequences: A019812 A019813 A019814 * A019816 A019817 A019818


KEYWORD

nonn,cons


AUTHOR

N. J. A. Sloane.


STATUS

approved



