Misc. Formulas

 

• Calculate the angle (in degrees) of a slope:

 

//Assume a 30% slope (rise over run);

 

nSlope = 0.30;

 

nAngle = Math.atan( nSlope ) / ( Math.PI/180 );

 

nAngle now equals approx 16.67 Degrees.

 

 

• Calculate the slope (in %) from an angle:

 

//Assume a 20-degree angle

 

nAngle = 20.0;

 

nSlope = Math.tan( nAngle * (Math.PI/180) );

 

nSlope now equals 0.3639 or a 36.39% slope.