Question

ajuda por favor se conseguir colocar a conta agradeço dou melhor resposta ​

Answer 1

Resposta:

4) x = 50cm e y = 86cm

5) x = 4,48cm e y = 5,39cm; x + y = 9,87cm

6) h = 14,4m

Explicação passo-a-passo:

4)

$sen30\º=\frac{x}{100cm}\\0,50 * 100cm = x\\x=50cm\\\\cos30\°=\frac{y}{100cm}\\\\0,86*100=y\\y=86cm$

5)

$sen40\°=\frac{x}{7}\\\\0,64 * 7=x\\x=4,48cm\\\\cos40\°=\frac{y}{7cm}\\\\0,77*7=y\\y=5,39cm\\\\x+y=9,87cm$

6)

$tag20\°=\frac{h}{40}\\\\0,36*40=h \\h=14,4m$