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A195771
Decimal expansion of arcsec(5).
2
1, 3, 6, 9, 4, 3, 8, 4, 0, 6, 0, 0, 4, 5, 6, 5, 8, 2, 7, 7, 7, 6, 1, 9, 6, 1, 3, 9, 4, 2, 2, 1, 2, 8, 0, 3, 1, 8, 5, 8, 5, 4, 6, 6, 1, 8, 2, 8, 5, 3, 2, 4, 5, 2, 4, 2, 3, 0, 2, 2, 1, 0, 5, 2, 6, 9, 8, 2, 9, 8, 8, 2, 8, 5, 1, 4, 2, 5, 2, 6, 4, 8, 9, 3, 8, 1, 7, 2, 4, 8, 2, 5, 8, 0, 6, 5, 8, 5, 9, 7
OFFSET
1,2
FORMULA
Equals arcsin(2*sqrt(6)/5) = arccos(1/5) = arctan(2*sqrt(6)). - Amiram Eldar, May 24 2021
EXAMPLE
arcsec(5) = 1.3694384060045658277761961394221280318585...
MATHEMATICA
(See A195769.)
RealDigits[ArcSec[5], 10, 120][[1]] (* Harvey P. Dale, Aug 27 2023 *)
CROSSREFS
Cf. A195769.
Sequence in context: A245223 A180593 A271742 * A086276 A176322 A300714
KEYWORD
nonn,cons
AUTHOR
Clark Kimberling, Sep 24 2011
STATUS
approved