Respuesta :

profereyes12122

Answer:

x = 11.3

Step-by-step explanation:

[tex]cos(61^{o} )=\frac{5.5}{x}[/tex]

[tex]x=\frac{5.5}{cos(61^{o}) } =11.34[/tex]

Rounded to the nearest tenth:

x = 11.3

Hope this helps

Answer:

x ≈ 11.3

Step-by-step explanation:

using the cosine ratio in the right triangle

cos61° = [tex]\frac{DE}{DF}[/tex] = [tex]\frac{5.5}{x}[/tex] ( multiply both sides by x )

x × cos61° = 5.5 ( divide both sides by cos61° )

x = [tex]\frac{5.5}{cos61}[/tex] ≈ 11.3 ( to the nearest tenth )

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