what is 'x' and 'y' (the shape is a 30-60-90) triangle

Question

Its like i said, its a 30-60-90 triangle. The hypotenuse is x, the short is y, the long is 20 radical 3. Y is opposite of 30*

Answer 1

sin30°=y/x, ½=y/x, x=2y.

Pythagoras: x²=y²+(20√3)², 4y²=y²+1200, 3y²=1200, y²=400, y=20, x=40.