Question

Calcule o valor de x no triângulo.

Answer 1

Só fazer cosseno de 30°
Cos 30° = $\frac{ 3\sqrt{3} }{x}$
$\frac{ \sqrt{3} }{2} = \frac{ 3\sqrt{3} }{x}$
$\sqrt{3}x = 6 \sqrt{x} 3$
$x= \frac{6 \sqrt{3} }{ \sqrt{3} }$
x= 6

Answer 2

Cos30 = 3 /3 : x /2 : 2 = 3 /3 : x /2 x = 6 /3 x = 6 /3 : /2 Racionalizando.. x = 6 /3 x /2 : /2 x /2 x = 6 /6 : 2 x = 3 /6