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

Author

N. J. A. Sloane

Keywords

• nonn
• cons

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

Programs

Mathematica

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

PARI

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

Formula

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