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 A019987 Decimal expansion of tangent of 89 degrees. 11
 5, 7, 2, 8, 9, 9, 6, 1, 6, 3, 0, 7, 5, 9, 4, 2, 4, 6, 8, 7, 2, 7, 8, 1, 4, 7, 5, 3, 7, 1, 1, 2, 5, 7, 7, 9, 8, 0, 2, 1, 7, 5, 2, 2, 2, 3, 5, 1, 4, 3, 9, 2, 6, 4, 7, 2, 5, 8, 1, 1, 0, 3, 6, 0, 6, 5, 2, 9, 2, 2, 8, 9, 3, 6, 4, 7, 9, 1, 9, 3, 0, 6, 7, 2, 4, 1, 6, 2, 8, 2, 2, 0, 6, 8, 3, 8, 8, 0, 6 (list; constant; graph; refs; listen; history; text; internal format)
 OFFSET 2,1 COMMENTS Also cotangent of 1 degree. - Mohammad K. Azarian, Jan 21 2006 An angebraic integer of degree 24. - Charles R Greathouse IV, Aug 27 2017 REFERENCES Mohammad K. Azarian, Forty-Five Nested Equilateral Triangles and cosecant of 1 degree, Problem 813, College Mathematics Journal, Vol. 36, No. 5, November 2005, p. 413-414.  Solution published in Vol. 37 , No. 5, November 2006, pp. 394-395. LINKS Ivan Panchenko, Table of n, a(n) for n = 2..1000 EXAMPLE 57.28996... PROG (PARI) tan(89*Pi/180) \\ Charles R Greathouse IV, Aug 27 2017 CROSSREFS Cf. A073449, A019987. Sequence in context: A154479 A153110 A099283 * A072097 A259070 A110937 Adjacent sequences:  A019984 A019985 A019986 * A019988 A019989 A019990 KEYWORD nonn,cons AUTHOR EXTENSIONS Edited by N. J. A. Sloane, Aug 19 2008 at the suggestion of R. J. Mathar STATUS approved

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Last modified April 1 02:15 EDT 2020. Contains 333153 sequences. (Running on oeis4.)