OFFSET
0,1
LINKS
Eric Weisstein's World of Mathematics, Definite Integral.
FORMULA
Equals Integral_{t=0..Pi/4} t^2/sin(t)^2 dt.
Equals Integral_{t=0..1} arctan(t)^2/t^2 dt. - Amiram Eldar, May 24 2021
EXAMPLE
0.84351...
MATHEMATICA
RealDigits[Integrate[t^2/Sin[t]^2, {t, 0, Pi/4}], 10, 120][[1]] (* Harvey P. Dale, Nov 19 2019 *)
CROSSREFS
KEYWORD
nonn,cons
AUTHOR
Eric W. Weisstein, Jan 13 2004
STATUS
approved