A195769 Decimal expansion of arctan(5).

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

Offset: 1

Author

Clark Kimberling, Sep 24 2011

Keywords

• nonn
• cons

Examples

			arctan(5) = 1.373400766945015860861271926444961148650999...
		

Links

• Index entries for transcendental numbers

Crossrefs

Cf. A105532, A195771, A195772.

Programs

Mathematica

r = 5;
N[ArcTan[r], 100]
RealDigits[%] (* A195769 *)
N[ArcCot[r], 100]
RealDigits[%] (* A105532 *)
N[ArcSec[r], 100]
RealDigits[%] (* A195771 *)
N[ArcCsc[r], 100]
RealDigits[%] (* A195772 *)

PARI

atan(5) \\ Charles R Greathouse IV, Nov 20 2024

Formula

Equals arcsin(5/sqrt(26)) = arccos(1/sqrt(26)). - Amiram Eldar, Jul 11 2023