Question

determine o valor de X e Y
ajuda urgente​

Answer 1

Resposta:

Explicação passo-a-passo:

sen 60 = $\frac{8}{y}$

0,86 = $\frac{8}{y}$

y = $\frac{8}{0,86} = 9,30$

tg 60 = $\frac{8}{x}$

$\sqrt{3} = \frac{8}{x}$

x = $\frac{8}{\sqrt{3} } = \frac{8\sqrt{3} }{3}$

.....................................

sen 45 = $\frac{12}{x}$

$\frac{\sqrt{2} }{2} = \frac{12}{x} \\\sqrt{2} x = 24\\ x = \frac{24}{\sqrt{2} } \\x=\frac{24\sqrt{2} }{2} \\ x = 12\sqrt{2}$

y = 12

.........................................

sen 30 = $\frac{x}{15}$

0,5 = $\frac{x}{15}$

x = 0,5 . 15

x = 7,5

cos 30 = $\frac{15}{y}$

0,86 = $\frac{15}{y}$

y = $\frac{15}{0,86} = 17,44$