A019866 Decimal expansion of sine of 57 degrees.

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

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

Minimal polynomial 65536*x^16 -262144*x^14 +430080*x^12 -372736*x^10 +182784*x^8 -50176*x^6 +7040*x^4 -384*x^2 +1 . - R. J. Mathar, Jun 03 2026

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