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Easy Way: BEC = X = 62°
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Expression 15: "D" Subscript, 2 , Baseline equals StartRoot, 0 , EndRoot
D
2
=
0
equals
=
0
0
15
Expression 16: "m" Subscript, 1 , Baseline equals tangent left parenthesis, negative "C" Subscript, "B" "D" , Baseline minus "D" Subscript, "B" "E" , Baseline , right parenthesis
m
1
=
t
a
n
−
C
B
D
−
D
B
E
equals
=
negative 1.8 8 0 7 2 6 4 6 5 3 5
−
1
.
8
8
0
7
2
6
4
6
5
3
5
16
Expression 17: "m" Subscript, 2 , Baseline equals tangent left parenthesis, 180 minus "A" Subscript, "D" "E" , Baseline , right parenthesis
m
2
=
t
a
n
1
8
0
−
A
D
E
equals
=
negative 0.3 0 5 7 3 0 6 8 1 4 5 9
−
0
.
3
0
5
7
3
0
6
8
1
4
5
9
17
Expression 18: "y" equals "m" Subscript, 1 , Baseline "x" plus "B" Subscript, 2 , Baseline
y
=
m
1
x
+
B
2
18
Expression 19: "y" equals "m" Subscript, 2 , Baseline left parenthesis, "x" minus "D" Subscript, 1 , Baseline , right parenthesis
y
=
m
2
x
−
D
1
19
Expression 20: "m" Subscript, 1 , Baseline "x" plus "B" Subscript, 2 , Baseline equals "m" Subscript, 2 , Baseline left parenthesis, "x" minus "D" Subscript, 1 , Baseline , right parenthesis
m
1
x
+
B
2
=
m
2
x
−
D
1
20
Expression 21: "E" Subscript, 1 , Baseline equals StartFraction, negative "B" Subscript, 2 , Baseline minus "m" Subscript, 2 , Baseline "D" Subscript, 1 , Baseline Over "m" Subscript, 1 , Baseline minus "m" Subscript, 2 , Baseline , EndFraction
E
1
=
−
B
2
−
m
2
D
1
m
1
−
m
2
equals
=
4.4 0 8 0 7 0 9 6 5 2 9
4
.
4
0
8
0
7
0
9
6
5
2
9
21
Expression 22: "E" Subscript, 2 , Baseline equals "m" Subscript, 2 , Baseline left parenthesis, "E" Subscript, 1 , Baseline minus "D" Subscript, 1 , Baseline , right parenthesis
E
2
=
m
2
E
1
−
D
1
equals
=
1.7 0 9 6 2 4 2 7 4 4 5
1
.
7
0
9
6
2
4
2
7
4
4
5
22
Graphs
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23
Expression 24: polygon left parenthesis, "B" , "E" , right parenthesis
p
o
l
y
g
o
n
B
,
E
24
Expression 25: polygon left parenthesis, "C" , "E" , right parenthesis
p
o
l
y
g
o
n
C
,
E
25
Expression 26: polygon left parenthesis, "B" , "D" , right parenthesis
p
o
l
y
g
o
n
B
,
D
26
Expression 27: polygon left parenthesis, "D" , "E" , right parenthesis
p
o
l
y
g
o
n
D
,
E
27
Expression 28: polygon left parenthesis, "A" , "B" , "C" , "D" , right parenthesis
p
o
l
y
g
o
n
A
,
B
,
C
,
D
28
Points
Points
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29
43
powered by
powered by
A
B
C
D
E
17°
17°
Side s
X
"x"
x
"y"
y
"a" squared
a
2
"a" Superscript, "b" , Baseline
a
b
7
7
8
8
9
9
over
÷
functions
(
(
)
)
less than
<
greater than
>
4
4
5
5
6
6
times
×
| "a" |
|
a
|
,
,
less than or equal to
≤
greater than or equal to
≥
1
1
2
2
3
3
negative
−
A B C
StartRoot, , EndRoot
pi
π
0
0
.
.
equals
=
positive
+
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