Question

Find AB.

B
8
610
A
C
Write your answer as an integer or as a decimal rounded to the nearest tenth.
AB =

Answer 1

AB ≈ 7.0

Explanation:

Using the sine ratio in the right triangle

sin61° =
`(opposite)/(hypotenuse)` =
`(AB)/(BC)` =
`(AB)/(8)` ( multiply both sides by 8 )

8 × sin61° = AB , then

AB ≈ 7.0 ( to the nearest tenth )