Resposta :
Resposta:
[tex]\textsf{Leia abaixo}[/tex]
Explicação passo a passo:
[tex]\mathsf{tg\:30\textdegree = \dfrac{x}{3,7 + y}}[/tex]
[tex]\mathsf{\dfrac{\sqrt{3}}{3} = \dfrac{x}{3,7 + y}}[/tex]
[tex]\mathsf{3,7\sqrt{3} + y\sqrt{3} = 3x}[/tex]
[tex]\mathsf{tg\:60\textdegree = \dfrac{x}{y}}[/tex]
[tex]\mathsf{\sqrt{3} = \dfrac{x}{y}}[/tex]
[tex]\mathsf{x = y\sqrt{3}}[/tex]
[tex]\mathsf{3,7\sqrt{3} + x = 3x}[/tex]
[tex]\mathsf{2x = 3,7\sqrt{3}}[/tex]
[tex]\mathsf{x = \dfrac{3,7\sqrt{3}}{2}}[/tex]
[tex]\boxed{\boxed{\mathsf{x = 3,1\:km}}}[/tex]