Question

Nos triangulos,calcule as medidas indicadas:​

Answer 1

Resposta:

a) a=10,39 u, c=5,19 u

b)x=29,41 u

Explicação passo-a-passo:

$a) \ cos30\°=\frac{9}{a} =>0,866a=9=>a=\frac{9}{0,866} => a=10,4u\\\\tag30\°=\frac{c}{9} =>0,577*9=c=>c=5,19u\\\\b) \ sen20\°=\frac{10}{x} =>0,34x=10=>x=\frac{10}{0,34}=> x =29,41u$