[Graphs generated by this script: initPicture(-0.25,1.25,-0.25,1.25);line([0,0],[0,1]);line([0,0],[.6,0]);line([.6,0],[0,1]);line([0.1,0],[0.1,0.1]);line([0,0.1],[0.1,0.1]);text([-0.05,-0.05],"C");text([0,1.07],"A");text([0.67,0],"B")]

Match each side as hypotenuse, opposite, or adjacent of angle A.