Answer:
23.3 (Rounded to Tenths)
Explanation:
This is a Trigonometry problem.
You use the Trigonometry Helper "SohCahToa"
(Sine[Opposite/Hypotenuse], Cosine[Adjacent/Hypotenuse], Tangent [Opposite/Adjacent])
This is
Cos39=x/30
(Cos39)30=x
23.3=x
(Rounded to Tenths)