A019834 Decimal expansion of sine of 25 degrees.

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

Offset

0,1

Comments

An algebraic number of degree 12 and denominator 2. - Charles R Greathouse IV, Aug 27 2017

Links

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

Index entries for algebraic numbers, degree 12

Formula

Equals A019829 * A019894 + A019814 * A019879. - R. J. Mathar, Jan 27 2021

Minimal polynomial 4096*x^12 -12288*x^10 +13824*x^8 -7168*x^6 +1680*x^4 -144*x^2+1 . - R. J. Mathar, Jun 03 2026

Mathematica

RealDigits[Sin[25 Degree], 10, 120][[1]] (* Harvey P. Dale, Mar 18 2018 *)

Prog

(PARI) sin(5*Pi/36) \\ Charles R Greathouse IV, Aug 27 2017

Crossrefs

Sequence in context: A023634 A199609 A284692 * A261557 A270809 A087507

Adjacent sequences: A019831 A019832 A019833 * A019835 A019836 A019837

Keyword

nonn,cons,changed

Author

N. J. A. Sloane

Status

approved