

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
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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, FortyFive Nested Equilateral Triangles and cosecant of 1 degree, Problem 813, College Mathematics Journal, Vol. 36, No. 5, November 2005, p. 413414. Solution published in Vol. 37 , No. 5, November 2006, pp. 394395.


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

N. J. A. Sloane.


EXTENSIONS

Edited by N. J. A. Sloane, Aug 19 2008 at the suggestion of R. J. Mathar


STATUS

approved



