Question

10)Determine o valor das incógnitas (letras):
90 cm
X
450
a)
50 cm
30°
b)

Olhem a imagem acima ☝☝☝​

Answer 1

A) sen45°=x/10

✓2/2=X/10=10√2/2

5√2

B)sen30°=X/50

1/2=x/50

2X=50

X=25

Cos30°=y/50

√3/2=y/50

2y=50√3

Y=25√3