A019811 Decimal expansion of sine of 2 degrees.

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

Offset

0,2

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 2*A019810*A019898. - R. J. Mathar, Jan 17 2021

Example

0.034899496702500971645995181625332937354824576043...

Mathematica

First[RealDigits[Sin[Pi/90], 10, 100, -1]] (* Paolo Xausa, Nov 14 2025 *)

Prog

(PARI) sin(Pi/90) \\ Charles R Greathouse IV, Aug 27 2017

Crossrefs

Sequence in context: A316137 A089290 A296497 * A075746 A342791 A275096

Adjacent sequences: A019808 A019809 A019810 * A019812 A019813 A019814

Keyword

nonn,cons,easy

Author

N. J. A. Sloane

Extensions

Zero added in front by R. J. Mathar, Feb 05 2009

Status

approved