(Solved): There is a big difference between degree of slope and ANGLE of the slope. Grade is Rise or Fall/Run ...

There is a big difference between degree of slope and ANGLE of the slope. Grade is Rise or Fall/Run. For example: a 1:12 sewer line has a 1" of fall for every 12" of horizontal distance. The "grade" of the sewer line is 1:12. So, degree of slope of the 1:12 Sewer line is Arc Tan $1/12(.0833)=4.7636^{?}$ Degree of slope is degree difference from horizontal. Fill in the blanks above.