Answer:
a=4ft.
Step-by-step explanation:
this is a special 30°-60°-90° triangle.
the side opposite the 30° angle is equal to x, the hypotenuse is equal to 2x, and the other side is equal to x√3.
in this case, since it is given that the hypotenuse is equal to 8ft, we can find a:
8/2=4
so, a=4 ft.