Question

3 arccos(-1/2)/ pi[/tex]

Answer 1

$frac{3arccos(-frac{1}{2})}{pi}=frac{3*(pi-arccos(frac{1}{2}))}{pi}=frac{3*(pi-frac{2*pi}{3})}{pi}=frac{3*frac{pi}{3})}{pi}=1$