Question

BC=
Round your answer to the nearest hundredth.

Answer 1

BC ≈ 1.71

Explanation:

Using the cosine ratio in the right triangle

cos70° =
`(adjacent)/(hypotenuse)` =
`(BC)/(AB)` =
`(BC)/(5)`

Multiply both sides by 5

5 × cos70° = BC , thus

BC ≈ 1.71 ( to the nearest hundredth )