Question

Responda a imagem abaixo

Answer 1

$\large\boxed{\begin{array}{l}\sf cos(30^\circ) =\dfrac{6}{x} \\\sf\dfrac{\sqrt{3}}{2}=\dfrac{6}{x} \\\sf\sqrt{3}x=2\cdot6\\\sf \sqrt{3}x=12\\\sf x=\dfrac{12}{\sqrt{3}}\cdot\dfrac{\sqrt{3}}{\sqrt{3}}\\\sf x=\dfrac{12\sqrt{3}}{\sqrt{3^{\diagdown\! \! \!2}} }\\\sf x=\dfrac{12\sqrt{3}}{3}\\\sf x=4\sqrt{3}~metros\\\boxed{\boxed{\boxed{\boxed{\sf~\maltese~alternativa~c}}}} \end{array}}$