Question 194486
A highway that has a 6% grade rises 6 ft vertically for
every 100 ft horizontally. Which trigonometric ratio is
being used in reporting the 6% grade? 
I really need help please can you please explain. 
--------------------
Looking at it like it's a graph, with x horizontal, the 6 ft vertical for the 100 feet horizontal, is y/x, which is the tangent of the angle at the Origin.
A 6% grade is an angle that has a tangent of 0.06.
tan(3.43363º) = 0.06