Answer:
x = 6
Explanation:
for SPECIAL RIGHT TRIANGLES specifically a 30°-60°-90° triangle.
The longest side is the hypotenuse. The longest side is twice the shortest side. Or the other way around, the shortest side is half the longest side.
Here the longest side (hypotenuse) is 12, so the shortest side is 6.
Also, since you seem to be trying to get this subject.
The long leg is the short leg× sqroot3.
OR the short leg is the long leg ÷ sqroot3. If you end up with a sqroot on the bottom of a fraction, you can't leave it like that. Times top and bottom by sqroot3/sqroot3 to fix it.