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A201504
Decimal expansion of sin(1/2).
3
4, 7, 9, 4, 2, 5, 5, 3, 8, 6, 0, 4, 2, 0, 3, 0, 0, 0, 2, 7, 3, 2, 8, 7, 9, 3, 5, 2, 1, 5, 5, 7, 1, 3, 8, 8, 0, 8, 1, 8, 0, 3, 3, 6, 7, 9, 4, 0, 6, 0, 0, 6, 7, 5, 1, 8, 8, 6, 1, 6, 6, 1, 3, 1, 2, 5, 5, 3, 5, 0, 0, 0, 2, 8, 7, 8, 1, 4, 8, 3, 2, 2, 0
OFFSET
0,1
COMMENTS
By the Lindemann-Weierstrass theorem, this constant is transcendental. - Charles R Greathouse IV, May 13 2019
FORMULA
Equals 1/2 - 1/(2^3*3!) + 1/(2^5/5!) - 1/(2^7*7!) + ..., Taylor series of sin(x).
Equals sqrt((1-A049470)/2).
EXAMPLE
0.47942553860420300027...
MAPLE
evalf(sin(1/2)) ;
MATHEMATICA
RealDigits[Sin[1/2], 10, 120][[1]] (* Amiram Eldar, Jun 27 2023 *)
PROG
(PARI) sin(.5) \\ Charles R Greathouse IV, May 13 2019
CROSSREFS
Cf. A049470.
Sequence in context: A021680 A299617 A201931 * A159898 A154160 A155065
KEYWORD
cons,easy,nonn
AUTHOR
R. J. Mathar, Dec 02 2011
STATUS
approved