Answer:
BC ≈ 1.71
Step-by-step explanation:
Using the cosine ratio in the right triangle
cos70° = [tex]\frac{adjacent}{hypotenuse}[/tex] = [tex]\frac{BC}{AB}[/tex] = [tex]\frac{BC}{5}[/tex]
Multiply both sides by 5
5 × cos70° = BC , thus
BC ≈ 1.71 ( to the nearest hundredth )
