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Angle ABD = X = 100°
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Expression 14: "m" Subscript, 4 , Baseline left parenthesis, "B" Subscript, 1 , Baseline minus "C" Subscript, 1 , Baseline , right parenthesis tilde "m" Subscript, 1 , Baseline "B" Subscript, 1 , Baseline
m
4
B
1
−
C
1
~
m
1
B
1
14
Expression 15: "B" Subscript, 2 , Baseline equals "m" Subscript, 1 , Baseline "B" Subscript, 1 , Baseline
B
2
=
m
1
B
1
equals
=
5.1 3 0 3 0 2 1 4 9 8 9
5
.
1
3
0
3
0
2
1
4
9
8
9
15
Expression 16: "x" equals StartFraction, "C" Subscript, 1 , Baseline Over 2 , EndFraction
x
=
C
1
2
equals
=
7.5
7
.
5
16
Expression 17: "m" Subscript, 2 , Baseline equals tangent 10
m
2
=
t
a
n
1
0
equals
=
0.1 7 6 3 2 6 9 8 0 7 0 8
0
.
1
7
6
3
2
6
9
8
0
7
0
8
17
Expression 18: "m" Subscript, 3 , Baseline equals tangent left parenthesis, 180 minus 20 , right parenthesis
m
3
=
t
a
n
1
8
0
−
2
0
equals
=
negative 0.3 6 3 9 7 0 2 3 4 2 6 6
−
0
.
3
6
3
9
7
0
2
3
4
2
6
6
18
Expression 19: "y" equals "m" Subscript, 2 , Baseline "x"
y
=
m
2
x
19
Expression 20: "y" equals "m" Subscript, 3 , Baseline left parenthesis, "x" minus "C" Subscript, 1 , Baseline , right parenthesis
y
=
m
3
x
−
C
1
20
Expression 21: "m" Subscript, 2 , Baseline "D" Subscript, 1 , Baseline tilde "m" Subscript, 3 , Baseline left parenthesis, "D" Subscript, 1 , Baseline minus "C" Subscript, 1 , Baseline , right parenthesis
m
2
D
1
~
m
3
D
1
−
C
1
21
Expression 22: "D" Subscript, 2 , Baseline equals "m" Subscript, 3 , Baseline left parenthesis, "D" Subscript, 1 , Baseline minus "C" Subscript, 1 , Baseline , right parenthesis
D
2
=
m
3
D
1
−
C
1
equals
=
1.7 8 1 7 3 5 2 3 8 4 2
1
.
7
8
1
7
3
5
2
3
8
4
2
22
Graphs
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23
Expression 24: polygon left parenthesis, "A" , "B" , "C" , right parenthesis
p
o
l
y
g
o
n
A
,
B
,
C
24
Expression 25: polygon left parenthesis, "A" , "D" , right parenthesis
p
o
l
y
g
o
n
A
,
D
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, "C" , "D" , right parenthesis
p
o
l
y
g
o
n
C
,
D
27
Points
Points
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28
40
powered by
powered by
A
B
C
D
30°
10°
20°
10°
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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