Right Triangle Problems
The calculator’s top row of keys provides
built-in solutions to square-up, drop, per-
cent grade and slope problems.
Square-up
is computed from the values
entered as length and width and is the
diagonal length in a right triangle.
Slope and percent grade
are computed
using the values for width and depth (or
drop). Slope can be entered as either a
ratio of run per unit rise, or as a decimal
degree. Percent grade is entered as a
percentage value. The following dia-
gram shows the relationship of these
features.
Slope Ratio = Width:Unit Depth
Depth
Percent Grade = _____ x 100 %
Width
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Depth
Length
Width
Slope Ratio
%–Grade
Square-up
Slope Angle
Width
User’s Guide – 37
