You can put this solution on YOUR website!
A highway that has a 6% grade rises 6ft. vertically for every 100ft. horizontally. What trigonometric ratio is being used in reporting the 6% grade? Explain why.
The "rise over the run" is the side opposite over the side adjacent. That's the tangent.
6% is a tangent of 0.06, so the angle is 3.4336 degs.
The 0.06 is also the slope, m, of the graph in x-y coordinates.
Slope = tangent