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.
Answer by Alan3354(69443)   (Show Source):
You can put this solution on YOUR website! 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
|
|
|
