A019878 Decimal expansion of sine of 69 degrees.

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

Offset

0,1

Comments

An algebraic number of degree 16 and denominator 2. - Charles R Greathouse IV, Nov 06 2017

Links

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

Wikipedia, Trigonometric constants expressed in real radicals

Index entries for algebraic numbers, degree 16

Formula

Equals A019855 * A019876 + A019832 * A019853 = A019875 * A019896 + A019812 * A019833. - R. J. Mathar, Jan 27 2021

Mathematica

RealDigits[Sin[69 Degree], 10, 120][[1]] (* Harvey P. Dale, Dec 19 2011 *)

Prog

(PARI) sin(23/60*Pi) \\ Charles R Greathouse IV, Nov 06 2017

Crossrefs

Sequence in context: A063569 A037921 A327135 * A272408 A177910 A198416

Adjacent sequences: A019875 A019876 A019877 * A019879 A019880 A019881

Keyword

nonn,cons

Author

N. J. A. Sloane

Status

approved