A sign on a roadway at the top of a mountain indicates that for the next 4 miles the grade is 10.5

Question

A sign on a roadway at the top of a mountain indicates that for the next 4 miles the grade is 10.5°. Find the change in elevation for a car descending the mountain. show work

Answer 1

Draw a picture of this. If the grade is 10.5 degrees, then the value of the angle is 90 - 10.5 = 79.5.

The length of this side, the hypotenuse, is 4

The base angle is 90.

therefore, the third angle is 10.5.

So, you have three angles and a side. Go to!!!