Answer:
d ≈ 6.48
Step-by-step explanation:
Using the tangent ratio in the right triangle
tan42° = [tex]\frac{opposite}{adjacent}[/tex] = [tex]\frac{EF}{DE}[/tex] = [tex]\frac{d}{7.2}[/tex]
Multiply both sides by 7.2
7.2 × tan42° = d, hence
d ≈ 6.48 ( to the nearest hundredth )
