Answer:
AB ≈ 7.1 cm
Step-by-step explanation:
Using the cosine ratio in the right triangle
cos28° = [tex]\frac{adjacent}{hypotenuse}[/tex] = [tex]\frac{AB}{AC}[/tex] = [tex]\frac{AB}{8}[/tex] ( multiply both sides by 8 )
8 × cos28° = AB , thus
AB ≈ 7.1 cm ( to the nearest tenth )
