Question

Please show work please thanks please show work

Answer 1

n ≈ 69.5

Explanation:

using the cosine ratio in the right triangle

cos75° =
`(adjacent)/(hypotenuse)` =
`(18)/(n)` ( multiply both sides by n )

n × cos75° = 18 ( divide both sides by cos75° )

n =
`(18)/(cos75)` ≈ 69.5 ( to the nearest tenth )