A019685 Decimal expansion of Pi/180.

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

Offset

0,3

Comments

1 degree = Pi/180 radians (=0.0174532925199432957692369076848...). For the reciprocal conversion factor, see A072097.

References

Konrad Knopp, Theory and application of infinite series, Blackie & Son Limited, London and Glasgow, 1954. See p. 258.

Murray R. Spiegel, Seymour Lipschutz, John Liu. Mathematical Handbook of Formulas and Tables, 3rd Ed. Schaum's Outline Series. New York: McGraw-Hill (2009): 4

Links

Ivan Panchenko, Table of n, a(n) for n = 0..1000

Index entries for transcendental numbers

Formula

Equals (1/10)*Integral_{t=0..Pi} sin(t)^2/(13 - 12*cos(t)) dt. - Stefano Spezia, May 03 2026

Example

0.0174532925199432957692369076848...

Mathematica

RealDigits[N[Pi/180, 110]] (* Vladimir Joseph Stephan Orlovsky, Dec 02 2009 *)

Crossrefs

Cf. A072097 (1 radian = 180/Pi degrees).

Sequence in context: A371802 A011475 A180078 * A208899 A393630 A087491

Adjacent sequences: A019682 A019683 A019684 * A019686 A019687 A019688

Keyword

nonn,cons

Author

N. J. A. Sloane

Extensions

Typo in the name (Pi/180 instead of Pi/18) corrected by Stanislav Sykora, Mar 14 2012

Status

approved