Sides in ratio 1 : 1 : √(2) and 1 : √(3) : 2. The 30-60-90 anchor: the short leg faces 30^circ and the hypotenuse is twice it. The error is assigning √(3) to the hypotenuse — check that the hypotenuse is biggest, since 2 > √(3) ≈ 1.73.