Solve each problem. Railroad Engineering The term grade has several diffe...

Solve each problem.

Railroad Engineering The term grade has several different meanings in construction work. Some engineers use the term grade to represent of a right angle and express grade as a percent. For instance, an angle of 0.9° would be referred to as a 1% grade. (Source: Hay, W., Railroad Engineering, John Wiley and Sons.)

(a) By what number should you multiply a grade (disregarding the % symbol) to convert it to radians?

(b) In a rapid-transit rail system, the maximum grade allowed between two stations is 3.5%. Express this angle in degrees and radians.