In a 30 - 60 - 90 the hypotenuse is twice the side opposite 30 so the side opposite 30 is 1/2 and the side opposite 60 is the sqrt (3) times the side opposite 30 x = sqrt(3)/2 the square root of 3 fraction bar 2
answer: x = [tex] \frac{ \sqrt{3} }{2} [/tex]
