Answer:
BC ≈ 32.2
Step-by-step explanation:
Using the cosine ratio in the right triangle
cos73° = [tex]\frac{adjacent}{hypotenuse}[/tex] = [tex]\frac{AB}{BC}[/tex] = [tex]\frac{9.4}{BC}[/tex] ( multiply both sides by BC )
BC × cos73° = 9.4 ( divide both sides by cos73° )
BC = [tex]\frac{9.4}{cos73}[/tex] ≈ 32.2 ( to 3 sf )
