can someone please give me the answer?

Answer:
x = 6.2
Step-by-step explanation:
Since the triangle is right use the sine ratio to find x
sin20° = [tex]\frac{opposite}{hypotenuse}[/tex] = [tex]\frac{x}{18}[/tex]
Multiply both sides by 18
18 × sin20° = x ⇒ x ≈ 6.2