WOLFRAM
|
DEMONSTRATIONS PROJECT
T
r
i
a
n
g
l
e
A
l
t
i
t
u
d
e
s
a
n
d
C
i
r
c
u
m
r
a
d
i
u
s
A
A
'
×
B
B
'
×
C
C
'
≈
1
2
2
.
2
(
B
C
×
A
C
×
A
B
)
8
3
c
i
r
c
u
m
r
a
d
i
u
s
≈
1
2
2
.
I
f
A
B
C
i
s
a
t
r
i
a
n
g
l
e
w
i
t
h
s
i
d
e
l
e
n
g
t
h
s
a
,
b
,
a
n
d
c
,
a
l
t
i
t
u
d
e
s
α
,
β
,
a
n
d
γ
,
a
n
d
c
i
r
c
u
m
r
a
d
i
u
s
R
,
t
h
e
n
α
β
γ
=
2
(
a
b
c
)
8
3
R
.