Answer:
B
Step-by-step explanation:
sine = opposite/hypotenuse
sin45 = x/4
sin45/1 = x/4
cross multiply
1 × x = 4 × sin45
x = 4sin45
x = 2.828427125
x = 2 × square root of 2 = 2.828427125
B ) 2[tex]\sqrt{2}[/tex]
Steps:
α = 90°, β = 45°, a = 4: b = 2.82842. . .
β = 45°
a = 4
α = 90°
b = [tex]\frac{4sin(45)}{sin(90)}[/tex]
b = 2.82842. . .
2[tex]\sqrt{2}[/tex] = 2.82842. . .
