A019816 Decimal expansion of sine of 7 degrees.

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

Offset: 0

Author

N. J. A. Sloane

Keywords

• nonn
• cons

Comments

An algebraic number of degree 48 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 48

Programs

Mathematica

RealDigits[Sin[7 Degree],10,120][[1]] (* Harvey P. Dale, Mar 25 2016 *)

PARI

sin(7*Pi/180) \\ Charles R Greathouse IV, Aug 27 2017

Formula

Also cosine of 83 degrees. - Charles R Greathouse IV, Aug 27 2017

Equals A019815 * A019898 + A019810 * A019893. - R. J. Mathar, Jan 27 2021