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A195701
Decimal expansion of arctan(sqrt(2/3)).
5
6, 8, 4, 7, 1, 9, 2, 0, 3, 0, 0, 2, 2, 8, 2, 9, 1, 3, 8, 8, 8, 0, 9, 8, 0, 6, 9, 7, 1, 1, 0, 6, 4, 0, 1, 5, 9, 2, 9, 2, 7, 3, 3, 0, 9, 1, 4, 2, 6, 6, 2, 2, 6, 2, 1, 1, 5, 1, 1, 0, 5, 2, 6, 3, 4, 9, 1, 4, 9, 4, 1, 4, 2, 5, 7, 1, 2, 6, 3, 2, 4, 4, 6, 9, 0, 8, 6, 2, 4, 1, 2, 9, 0, 3, 2, 9, 2, 9, 8, 5
OFFSET
0,1
LINKS
FORMULA
Equals arcsin(sqrt(2/5)) = arccos(sqrt(3/5)). - Amiram Eldar, Jul 10 2023
EXAMPLE
arctan(sqrt(2/3)) = 0.68471920300...
MATHEMATICA
r = Sqrt[2/3];
N[ArcSin[r], 100]
RealDigits[%] (* A195696 *)
N[ArcCos[r], 100]
RealDigits[%] (* A195695 *)
N[ArcTan[r], 100]
RealDigits[%] (* A195701 *)
N[ArcCos[-r], 100]
RealDigits[%] (* A195702 *)
PROG
(PARI) atan(sqrt(2/3)) \\ G. C. Greubel, Nov 18 2017
(Magma) [Arctan(Sqrt(2/3))]; // G. C. Greubel, Nov 18 2017
CROSSREFS
KEYWORD
nonn,cons
AUTHOR
Clark Kimberling, Sep 23 2011
STATUS
approved