Question

Determine o valor da incógnita:

Answer 1

$a)~~ seno~30\°= \frac{12}{x}$
$\frac{1}{2} = \frac{12}{x}$ 
$x = \frac{1}{24}$


$b) ~tg30\° = \frac{x}{6}$
$\frac{ \sqrt{3} }{3} = \frac{x}{6}$
$6 \sqrt{3} = 3x$
$x= \frac{6 \sqrt{3} }{3}$
$x=2\sqrt{3}$