Answer:
The first one
Step-by-step explanation:
Using the tangent ratio in the right triangle
tan30° = [tex]\frac{opposite}{adjacent}[/tex] = [tex]\frac{AC}{BC}[/tex] = [tex]\frac{b}{8}[/tex]
Multiply both sides by 8
8 × tan30° = b, that is
b = 8tan30°
