Answer:
BC ≈ 12.6 m
Step-by-step explanation:
Using the tangent ratio in the right triangle
tan31° = [tex]\frac{opposite}{adjacent} [/tex] = [tex]\frac{AB}{BC} [/tex] = [tex]\frac{7.6}{BC} [/tex] ( multiply both sides by BC )
BC × tan31° = 7.6 ( divide both sides by tan31° )
BC = [tex]\frac{7.6}{tan31} [/tex] ≈ 12.6 m ( to 3 sf )
