Question

Find the length of side BC.

Give your answer to 1 decimal place.
с
14 cm
58°
А.
B

Answer 1

BC ≈ 11.9 cm

Explanation:

Using the sine ratio in the right triangle

sin58° =
`(opposite)/(hypotenuse)` =
`(BC)/(AC)` =
`(BC)/(14)` ( multiply both sides by 14 )

14 × sin58° = BC , then

BC ≈ 11.9 cm ( to 1 dec. place )

Answer 2

BC= 11.9 cm or you can say almost 12 cm