OFFSET
1,3
COMMENTS
See the Mathematica program for a graph.
xo=0.277097976418521518914833086895...
yo=0.289494183027862650094360757305...
m=1.0447358251025919644670467125044...
|OP|=0.4007370341535820008719293563...
LINKS
G. C. Greubel, Table of n, a(n) for n = 1..10000
EXAMPLE
1.044735825102591964467046712504404113048658932805059578874283182084650....
MATHEMATICA
c = 1;
xo = x /. FindRoot[x == Sin[x + c] Cos[x + c], {x, .8, 1.2}, WorkingPrecision -> 100]
RealDigits[xo] (* A179378 *)
m = 1/Sin[xo + c]
RealDigits[m] (* A197009 *)
yo = m*xo
d = Sqrt[xo^2 + yo^2]
Show[Plot[{Cos[x + c], yo - (1/m) (x - xo)}, {x, -Pi/4, Pi/2}],
ContourPlot[{y == m*x}, {x, 0, Pi}, {y, 0, 1}], PlotRange -> All,
AspectRatio -> Automatic, AxesOrigin -> Automatic]
PROG
(PARI) default(realprecision, 100); 1/sin(1 + solve(x=0, 2, x-sin(x+1)*cos(x+1))) \\ G. C. Greubel, Nov 16 2018
CROSSREFS
KEYWORD
nonn,cons
AUTHOR
Clark Kimberling, Oct 10 2011
STATUS
approved