Question

Based on the picture below:

Solve for AB

Answer 1

AB ≈ 35.93

Explanation:

Using the cosine ratio in the right triangle

cos3.5° =
`(adjacent)/(hypotenuse)` =
`(AB)/(AC)` =
`(AB)/(36)`

Multiply both sides by 36

36 × cos3.5° = AB, thus

AB ≈ 35.93 ( to 2 dec. places)