Can someone help me?

Answer:
he missing length (X) is 12.
Step-by-step explanation:
In this case, we have two triangles with corresponding angles of 60 degrees. Let's label the lengths of the sides of the first triangle as follows:
Side A = 12
Side B = X (the missing length)
Side C = 60
Now, let's compare the corresponding sides of the two triangles:
12/X = 60/60
Since the corresponding sides are proportional, we can cross-multiply and solve for X:
12 * 60 = X * 60
720 = 60X
Dividing both sides by 60:
720/60 = X
X = 12
:))