Question

Calcule o valor de x

Answer 1

$sen(60) = \frac{cateto \: oposto}{hipotenusa} \\ \frac{ \sqrt{3} }{2} = \frac{y}{20} \\ 2y = 20 \sqrt{3} \\ y = \frac{20 \sqrt{3} }{2} \\ y = 10 \sqrt{3} \\ \\ cos(60) = \frac{cateto \: adjacente}{hipotenusa} \\ \frac{1}{2} = \frac{x}{20} \\ 2x = 20 \\ x = \frac{20}{2} \\ x = 10$