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RealDigits[ArcTan[(3Sqrt[15])/29], 10, 120][[1]] (* Harvey P. Dale, Aug 24 2019 *)

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editing

_Rick L. Shepherd (rshepherd2(AT)hotmail.com), _, May 16 2008, Jul 18 2008

OEIS Server: https://oeis.org/edit/global/176

The Brocard angle in radians of the obtuse scalene triangle with sides of lengths 2, 3, and 4, the scalene triangle with least integer side lengths. See formulas in the Weisstein link.

cons,nonn,new

Angle in radians of theThe Brocard angle in radians of the obtuse scalene triangle with sides of lengths 2, 3, and 4, the scalene triangle with least integer side lengths. See formulas in the Weisstein link.

cons,nonn,new

Rick L. Shepherd (rshepherd2(AT)hotmail.com), May 16 2008, Jul 18 2008

Decimal expansion of arctan(3*sqrt(15)/29).

3, 8, 1, 0, 6, 9, 5, 6, 8, 7, 7, 7, 5, 6, 0, 2, 6, 9, 0, 8, 1, 4, 9, 3, 4, 2, 3, 7, 9, 8, 7, 4, 2, 1, 3, 9, 3, 8, 2, 2, 4, 6, 4, 7, 9, 3, 8, 7, 7, 6, 4, 6, 9, 2, 2, 2, 8, 3, 1, 5, 6, 9, 0, 1, 3, 2, 2, 5, 4, 7, 0, 4, 9, 6, 8, 0, 9, 6, 7, 9, 2, 0, 4, 5, 5, 0, 0, 0, 2, 6, 4, 8, 8, 2, 5, 5, 4, 8, 5, 6, 1, 0, 2, 3, 2

0,1

Angle in radians of the Brocard angle of the obtuse scalene triangle with sides of lengths 2, 3, and 4, the scalene triangle with least integer side lengths. See formulas in the Weisstein link.

Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/BrocardAngle.html">Brocard Angle</a>.

arctan(3*sqrt(15)/29) = arctan(4*A140239/29) = arcsin(3*sqrt(915)/244) = arccos(29*sqrt(61)/244).

0.38106956877756026908149342379874213938224647938776469222831569013225470496...

(PARI) atan(3*sqrt(15)/29)

Cf. A140273, A140239.

cons,nonn

Rick L. Shepherd (rshepherd2(AT)hotmail.com), May 16 2008

approved