Respuesta :

Answer:

x ≈ 18.9

Step-by-step explanation:

using the cosine ratio in the right triangle

cos19° = [tex]\frac{adjacent}{hypotenuse}[/tex] = [tex]\frac{x}{20}[/tex] ( multiply both sides by 20 )

20 × cos19° = x , then

x ≈ 18.9 ( to the nearest tenth )

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