Resposta:
[tex] \sin(30°) = \dfrac{y}{6} \\ \\ \dfrac{1}{2} = \dfrac{y}{6} \\ \\ 2 y = 6 \\ \\ y = \dfrac{6}{2} \\ \\ y = 3[/tex]
[tex] \sin(30°) = \dfrac{x}{6 + 4} \\ \\ \dfrac{1}{2} = \dfrac{x}{10} \\ \\ 2x = 10 \\ \\ x = \dfrac{10}{2} \\ \\ x = 5[/tex]
[tex]x + y = 5 + 3 \\ \\ \blue{x + y = 8}[/tex]
Letra a) 8
Bons Estudos!
