Question

alguém consegue resolver??​

Answer 1

Resposta:

Explicação passo-a-passo:

Basta usar a Lei dos Senos

$\dfrac{x}{sen30}=\dfrac{7\sqrt{2}}{sen45}\\\\x=\dfrac{7\sqrt{2}.\dfrac{1}{2}}{\dfrac{\sqrt{2}}{2}}\\\\\\x=\dfrac{7\sqrt{2}}{2}.\dfrac{2}{\sqrt{2}}\\\\\\x=7$