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

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

Examples

			0.034899...
		

Links

• Ivan Panchenko, Table of n, a(n) for n = 0..1000
• Index entries for algebraic numbers, degree 12

Programs

PARI

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

Formula

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

Extensions

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