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Revision History for A019871

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Showing entries 1-10 | older changes

A019871

Decimal expansion of sine of 62 degrees.
(history; published version)

#15 by Jon E. Schoenfield at Mon Dec 27 21:03:33 EST 2021

STATUS

editing

approved

#14 by Jon E. Schoenfield at Mon Dec 27 21:03:32 EST 2021

AUTHOR

N. J. A. Sloane.

STATUS

approved

editing

#13 by R. J. Mathar at Sun Jan 17 10:14:09 EST 2021

STATUS

editing

approved

#12 by R. J. Mathar at Sun Jan 17 10:14:05 EST 2021

FORMULA

Equals 2*A019840*A019868. - R. J. Mathar, Jan 17 2021

EXAMPLE

0.882947592...

STATUS

approved

editing

#11 by Charles R Greathouse IV at Mon Nov 06 10:46:11 EST 2017

STATUS

editing

approved

#10 by Charles R Greathouse IV at Mon Nov 06 10:46:09 EST 2017

COMMENTS

Am algebraic number of degree 12 and denominator 2. - Charles R Greathouse IV, Nov 06 2017

FORMULA

Equals cos(7*pi/45) = 2F1(11/15,4/15;1/2;3/4) / 2. [From _- _R. J. Mathar_, Oct 27 2008]

PROG

(PARI) sin(31/90*Pi) \\ Charles R Greathouse IV, Nov 06 2017

STATUS

approved

editing

#9 by Joerg Arndt at Sun Aug 31 13:22:33 EDT 2014

STATUS

proposed

approved

#8 by Ivan Panchenko at Sun Aug 31 13:03:09 EDT 2014

STATUS

editing

proposed

#7 by Ivan Panchenko at Sun Aug 31 13:03:07 EDT 2014

LINKS

Ivan Panchenko, <a href="/A019871/b019871.txt">Table of n, a(n) for n = 0..1000</a>

STATUS

approved

editing

#6 by Russ Cox at Fri Mar 30 17:38:31 EDT 2012

FORMULA

Equals cos(7*pi/45) = 2F1(11/15,4/15;1/2;3/4) / 2. [From _R. J. Mathar (mathar(AT)strw.leidenuniv.nl), _, Oct 27 2008]

Discussion

Fri Mar 30

17:38

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