OFFSET
1,2
FORMULA
Equals arcsin(sqrt(35)/6) = arccos(1/6) = arctan(sqrt(35)). - Amiram Eldar, May 24 2021
EXAMPLE
arcsec(6) = 1.4033482475752072886780470855961132211...
MATHEMATICA
(See A195773.)
CROSSREFS
KEYWORD
nonn,cons
AUTHOR
Clark Kimberling, Sep 24 2011
STATUS
approved