sub infix:<∘> (&𝑔, &𝑓) { -> \x { 𝑔 𝑓 x } }

my \𝐴 = &sin,  &cos,  { $_ ** <3/1> }
my \𝐵 = &asin, &acos, { $_ ** <1/3> }

say .(.5) for 𝐴 Z∘ 𝐵