Question

Calcule o valor de x na figura abaixo​

Answer 1

Olá!

$sen(\alpha)=\dfrac{Cateto~Oposto}{Hipotenusa}~~~~~\to~~~~~sen(30)=\dfrac{x}{12}~~~~~\to ~~~~~\dfrac{1}{2} =\dfrac{x}{12} \\ \\ \\ \\ 12\cdot 1=2\cdot x~~~~~\to ~~~~~x=\dfrac{12}{2}~~~~~\to ~~~~~\boxed{x=6}$

:)