A highway that has a 6% rises 6' vertically for every 100' horizontally. Which trigonometric ratio is used?

Question

This is a trig question that I am having difficulty understanding...any clarity that one can provide would be very helpful.

Answer 1

tang x=6'/100'

Answer 2

If the question wants you to find out the angle of inclination of the highway(meaning the angle that it rises at)

Tangent

we'll call this angle "x"

tan(x) = Opposite/Adjacent

tan(x) = 6/100

x = tan^(-1)(0.06)

Answer 3

tan(x) = 6/100

x = tanֿ¹(6/100)

= 3.42degrees