3x^2/4 so its going to be 3x^2/4 take the principle root of both sides. you get BD is equal to... is equal to square root(3 times x)... times x the principle of 3 is the square root of 3 the principle root of x^2 is just x over the principle root of 4 which is 2 and BD is a side opposite the 60 degree side so we're done, if this hypotenuse is x, the side opposite the 30 side is going to be x/2 and the side opposite the 60 degree side is going to be the square root of (3x/2) depending on how you want to view it.