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234
When
all
the above data
is input,
the center coordinates
of
the circle osculating circles
C
1
and C
2
and the
coordinates
of
points
of
contact
P
1
and P
2
are displayed
on the
screen in
the
order
named.
Then,
the program
ends.
Conditions
Value
(1)
When the
circle
to solve with
respect
to
circle C
1
is
osculating externall
y
1
When
the
circle to solve with respect
to
circle
C
1
is
osculating internally
-1
(2)
When the circle
to
solve with respect
to
circle C
2
i
s
oscul
a
ting externally
1
When
the
circle
to
solve with respect
to
circle
C
2
is
osculating internally
-1
(3)
When the
circle
is
on the
left side as circle C
2
is
viewed from circle
C,
1
When
the circle is on
the right side
as
circle C
2
is viewed
from
circle C
1
-1
3.
Then input
the value
of
each of the following three discriminating
conditions:
•
HOW TO OPERATE
1. Press
~
[A]
.
(Program starts)
2.
Input
the center
coordinates (x, and
y,)
of
circle
C
1
and
radius
R,,
the
center
coordinates (x
2
and
y
2)
of circle C
2
and radius
R
2,
and
the radius
R of
the
circle
osculating circle
C
1
and C
2
according to the
display.
There
are
two adjoining circles to both of which another circle is
tenderly
adhering.
Will
a warm feeling begin
to
bud
there?
Such
a
way
of looking
at
these
circles
may bring a
light touch
to your study of geometry. This
program
finds out the center of a circle
osculating
two circles
and the
coordinates of the two points
of contact by inputting the
center
coordinates
and
radius of
each
of
the two
circles
together
with
three
discriminat-
ing
conditions.
PROGRAM
TITLE: A
Circle Osculating Two Circles
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