Hello!
When dealing with an angle and both legs of the triangle, you use the tangent. The tangent is opposite divided by the adjacent side. First, let's find our tangent.
tan30≈0.58
Now, this gives us the equation below.
x/25=0.58
To find our answer, we multiply both sides by 25.
x=14.5
Therefore, our answer is 14.5.
I hope this helps!