SOLUTION: Hilly areas often have road signs giving the percentage grade for the road. A 5% grade, for example, means that the altitude changes by 5 feet for each 100 feet of horizontal dista

Algebra ->  Triangles -> SOLUTION: Hilly areas often have road signs giving the percentage grade for the road. A 5% grade, for example, means that the altitude changes by 5 feet for each 100 feet of horizontal dista      Log On


   

Question 439421: Hilly areas often have road signs giving the percentage grade for the road. A 5% grade, for example, means that the altitude changes by 5 feet for each 100 feet of horizontal distance.
Suppose an uphill road sign indicates a road grade of 8%. What is the angle of elevation of the road?

Answer by robertb(5830) About Me  (Show Source):
You can put this solution on YOUR website!
Angle of elevation = theta+=+tan%5E%28-1%29%280.08%29+=+4.57%5Eo