A019908 Decimal expansion of tangent of 10 degrees.

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

Offset

0,2

Comments

Also the decimal expansion of cotangent of 80 degrees. - Mohammad K. Azarian, Jun 30 2013

Links

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

Example

0.176326980708464973471090386868618986121633...

Mathematica

RealDigits[Tan[10 Degree], 10, 120][[1]] (* Harvey P. Dale, Oct 14 2012 *)

Prog

(PARI) tan(Pi/18) \\ Hugo Pfoertner, Aug 04 2024

Crossrefs

Cf. A019918.

Sequence in context: A214280 A291081 A030797 * A021135 A198374 A225450

Adjacent sequences: A019905 A019906 A019907 * A019909 A019910 A019911

Keyword

nonn,cons

Author

N. J. A. Sloane.

Status

approved