Answer:
x ≈ 10.6
Step-by-step explanation:
The hypotenuse and the side adjacent to the angle are the ones marked on the diagram. The relation with the angle is ...
Cos = Adjacent/Hypotenuse
cos(28°) = x/12 . . . . . . . . . use the given values
x = 12·cos(28°) ≈ 10.6 . . . multiply by 12
