Resposta :
Boa noite :)
Seno = [tex] \frac{oposto}{hipotenusa} [/tex]
sen 30° = [tex] \frac{y}{12} [/tex]
[tex] \frac{1}{2} = \frac{y}{12} [/tex]
[tex]y = \frac{12}{2} [/tex]
y = 6
Seno = [tex] \frac{oposto}{hipotenusa} [/tex]
sen 30° = [tex] \frac{y}{12} [/tex]
[tex] \frac{1}{2} = \frac{y}{12} [/tex]
[tex]y = \frac{12}{2} [/tex]
y = 6