OFFSET
1,2
FORMULA
(distance, (0,0), (Pi/4, sqrt(2)) = (1/4) sqrt(Pi^2 + 32).
EXAMPLE
distance = 1.6176681597497321433385082164856117489...
MATHEMATICA
r = NIntegrate[Sqrt[1 + Cos[t]^2], {t, 0, Pi/4}, WorkingPrecision -> 200]
RealDigits[r][[1]]
CROSSREFS
KEYWORD
nonn,cons
AUTHOR
Clark Kimberling, Jul 01 2020
STATUS
approved