A019904 Decimal expansion of tangent of 6 degrees.

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

Offset: 0

Author

N. J. A. Sloane

Keywords

• nonn
• cons

Comments

Also the decimal expansion of cotangent of 84 degrees. - Mohammad K. Azarian, Jun 30 2013

An algebraic integer of degree 8. - Charles R Greathouse IV, Nov 17 2017

Links

• Ivan Panchenko, Table of n, a(n) for n = 0..1000
• Wikipedia, Exact trigonometric constants
• Index entries for algebraic numbers, degree 8

Programs

Mathematica

RealDigits[Tan[6 Degree],10,120][[1]] (* Harvey P. Dale, Jun 18 2024 *)

PARI

tan(Pi/30) \\ Charles R Greathouse IV, Nov 17 2017