Answer:
C
Step-by-step explanation:
Using the tangent ratio in the right triangle
tan54° = [tex]\frac{opposite}{adjacent}[/tex] = [tex]\frac{BC}{AC}[/tex] = [tex]\frac{BC}{39}[/tex] ( multiply both sides by 39 )
39 × tan54° = BC, then
BC ≈ 53.68 ( to 2 dec. places ) → C
