Question

No triangulo ABC, temos a = 10 B = 30° b= ?

Answer 1

Boa tarde!


$\sin(30) = \frac{1}{2}$


$\sin( \frac{cateto \:oposto}{hipotenusa} )$


$\frac{1}{2} = \frac{b}{10}$

2b= 10

$b = \frac{10}{2}$

b = 5