A019904 - OEIS

%I #23 Jun 18 2024 19:02:05

%S 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,

%T 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,

%U 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

%N Decimal expansion of tangent of 6 degrees.

%C Also the decimal expansion of cotangent of 84 degrees. - _Mohammad K. Azarian_, Jun 30 2013

%C An algebraic integer of degree 8. - _Charles R Greathouse IV_, Nov 17 2017

%H Ivan Panchenko, <a href="/A019904/b019904.txt">Table of n, a(n) for n = 0..1000</a>

%H Wikipedia, <a href="http://en.wikipedia.org/wiki/Exact_trigonometric_constants">Exact trigonometric constants</a>

%H <a href="/index/Al#algebraic_08">Index entries for algebraic numbers, degree 8</a>

%t RealDigits[Tan[6 Degree],10,120][[1]] (* _Harvey P. Dale_, Jun 18 2024 *)

%o (PARI) tan(Pi/30) \\ _Charles R Greathouse IV_, Nov 17 2017

%K nonn,cons

%O 0,3

%A _N. J. A. Sloane_.