ARCSIN X=ARCOS [1 - X^2]^0.5
ARCOS X=ARCSIN [1 - X^2]^0.5
ARTAN X=ARCOS(1/X^2+1)^0.5
ARTAN X=ARCOS(X^2/X^2+1)^0.5
COS(ARTAN X)=1/(1+X^2)^0.5
SIN(ARTAN X)=X/(1+X^2)^0.5
ARCOS X=ARCSIN [1 - X^2]^0.5
ARTAN X=ARCOS(1/X^2+1)^0.5
ARTAN X=ARCOS(X^2/X^2+1)^0.5
COS(ARTAN X)=1/(1+X^2)^0.5
SIN(ARTAN X)=X/(1+X^2)^0.5