Question

2) Determine o valor de x + y.
a) 8
4
b) 9
c) 10
d) 12
6
X
e) 15
y
30°
.​

Answer 1

Resposta:

$\sin(30°) = \dfrac{y}{6} \\ \\ \dfrac{1}{2} = \dfrac{y}{6} \\ \\ 2 y = 6 \\ \\ y = \dfrac{6}{2} \\ \\ y = 3$

$\sin(30°) = \dfrac{x}{6 + 4} \\ \\ \dfrac{1}{2} = \dfrac{x}{10} \\ \\ 2x = 10 \\ \\ x = \dfrac{10}{2} \\ \\ x = 5$

$x + y = 5 + 3 \\ \\ \blue{x + y = 8}$

Letra a) 8

Bons Estudos!