A019985 Decimal expansion of tangent of 87 degrees.

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

Offset: 2

Author

N. J. A. Sloane

Keywords

• nonn
• cons

Comments

Also the decimal expansion of cotangent of 3 degrees. - Mohammad K. Azarian, Jun 29 2013

An algebraic integer of degree 8. - Charles R Greathouse IV, Aug 27 2017

Links

• Ivan Panchenko, Table of n, a(n) for n = 2..1000
• Wikipedia, Exact trigonometric constants
• Index entries for algebraic numbers, degree 8

Programs

Mathematica

RealDigits[Tan[87 Degree],10,120][[1]] (* Harvey P. Dale, Sep 08 2015 *)

PARI

tan(87*Pi/180) \\ Charles R Greathouse IV, Aug 27 2017