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Example: Part 1: You want to suspend a cable between two poles
that are 40 feet apart. The cable must pass under a tree limb 25 feet
high located 5 feet from one of the poles. How far off the ground will
the cable be at its lowest point?
F
S
x=-—20
x=0
You can use the one known point (15,25) to calculate A. Press
BEaquaTions and display equation #1. Then, since there can be more
than one solution to the equation, enter guesses for A:
Keys:
Display:
Description:
10
A
Enters guesses 10 and
20 @(SOLVE]
A XY
20 for A.
{RA}
Y ?value
Selects A; prompts for
Y.
25
X?value
Stores Y, prompts for
X.
15
A=18.6268
Stores X, solves for A.
130
8: Additional Examples
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