me assume that junk shood be
invers sine(2x) +invers kosine(-1)=invers sine[sqrt(3/2)]
oenlee part thats kleer...sqrt(3/2)=sqrt(1.5)= +-1.224744871391589
???? yu want invers sine av (1.22474487...)??????
Thats NOT legal...sine must be tween +1 & -1
invers kosine(-1)=180 deg or pi radians
Kant get tu the part bout sine(2x)