Advertisement
Example:
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?
At
what height should the
cable
be attached
to
the
poles?
What length
of
cable
is
needed?
x-
-20
l.
To enter
the first
equation, press lt-S-LVE l, then
ffi.
2.
Type
Y=HxC0SH
( N+H
)
mFm.
3.
Press
ffi
and type L=zxHxs
I
NH
(
x+H
)
[JtiFwl.
4.
Press
EJ to
display the first
equation.
5.Pressffitodisplaythemenuofvariablesforthefirst
equation.
x-
0
I
x:20
I
x-
15
\-,
\,/
\-,
\-,
\-/
\-,
\-,
\-,
\-,
\-,
v
\-,
\-
\-/
\./
\-,
\-,
\-/
\-/'
\-/
v
9: Additional
Eramples
169
Advertisement
