A019866 - OEIS

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A019866

Decimal expansion of sine of 57 degrees.

3

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

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OFFSET

0,1

COMMENTS

An algebraic number of degree 16 and denominator 2. - Charles R Greathouse IV, Nov 05 2017

LINKS

Ivan Panchenko, Table of n, a(n) for n = 0..1000

Wikipedia, Exact trigonometric constants

Index entries for algebraic numbers, degree 16

FORMULA

Equals A019847 * A019880 + A019828 * A019861 = A019863 * A019896 + A019812 * A019845. - R. J. Mathar, Jan 27 2021

MATHEMATICA

RealDigits[Sin[57 Degree], 10, 120][[1]] (* Harvey P. Dale, Oct 30 2011 *)

PROG

(PARI) sin(19/60*Pi) \\ Charles R Greathouse IV, Nov 05 2017

CROSSREFS

Sequence in context: A190408 A343851 A085672 * A006833 A368008 A085011

Adjacent sequences: A019863 A019864 A019865 * A019867 A019868 A019869

KEYWORD

nonn,cons

AUTHOR

N. J. A. Sloane

STATUS

approved