If the point (x, square root 3/2) is on the unit circle, what is x?

Answer:
[tex]\frac{1}{2}[/tex]
Step-by-step explanation:
On a unit circle, the only points where y = [tex]\frac{\sqrt{3} }{2}[/tex] have an x coordinate of [tex]\frac{1}{2}[/tex] or [tex]\frac{-1}{2}[/tex] . Since only one of those is an option, the answer is [tex]\frac{1}{2}[/tex].