Use a calculator to find the approximate value of arcsin(0.72).

Arcsin is the same thing as inverse sin which is found by pressing the 2nd button on your calculator and then the sin button.  You will see this on your screen: [tex]sin ^{-1}( [/tex] and it is following that parenthesis that you enter your decimal.  The angle that gives us a sin of .72 is 46.05°