Computing the Rise Side
of an Angle (Diagonal known)
Find the Run and Rise sides of a right angle
with Pitch and Diagonal known. Here, find the
Rise and Run given a 7-in-12 Pitch and a Diag-
onal of 20 feet 5 inches:
COMMENTS KEYSTROKES
Clear calculator [On/C] [On/C]
Enter Pitch 7 [Inch] [Pitch]
Enter Diagonal 20 [Feet]
5 [Inch] [Diag]
Find Rise [Rise]
Answer: 10 FT 3-29/64 IN
Find Run [Run]
Answer: 17 FT 7-5/8 IN
Computing the Run Side
of an Angle
You can also compute the Run side of a right
triangle just as you would the Rise. Here, find
the Run given a 5-in-12 Pitch and a Diagonal of
21 feet 6 inches:
COMMENTS KEYSTROKES
Clear calculator [On/C] [On/C]
Enter Pitch 5 [Inch] [Pitch]
Enter Diagonal 21 [Feet]
6 [Inch] [Diag]
Find Run [Run]
Answer: 19 FT 10-5/32 IN
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