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Angle ADB = 70°
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Expression 9: "B" Subscript, 2 , Baseline equals "B" Subscript, 1 , Baseline tangent 20 equals 3.6 3 9 7 0 2 3 4 2 6 6
B
2
=
B
1
t
a
n
2
0
equals
=
3.6 3 9 7 0 2 3 4 2 6 6
3
.
6
3
9
7
0
2
3
4
2
6
6
9
Expression 10: "C" Subscript, 1 , Baseline equals "B" Subscript, 2 , Baseline tangent 30 plus "B" Subscript, 1 , Baseline equals 12.1 0 1 3 8 3 1 2 7 3
C
1
=
B
2
t
a
n
3
0
+
B
1
equals
=
12.1 0 1 3 8 3 1 2 7 3
1
2
.
1
0
1
3
8
3
1
2
7
3
10
Expression 11: "C" Subscript, 2 , Baseline equals "A" Subscript, 2 , Baseline equals 0
C
2
=
A
2
equals
=
0
0
11
Expression 12: "D" Subscript, 1 , Baseline equals "C" Subscript, 1 , Baseline plus "C" Subscript, "D" , Baseline cosine left parenthesis, 180 plus 60 , right parenthesis equals 10.9 8 3 2 6 0 5 1 9 5
D
1
=
C
1
+
C
D
c
o
s
1
8
0
+
6
0
equals
=
10.9 8 3 2 6 0 5 1 9 5
1
0
.
9
8
3
2
6
0
5
1
9
5
12
Expression 13: "D" Subscript, 2 , Baseline equals "C" Subscript, "D" , Baseline sine left parenthesis, 180 plus 60 , right parenthesis equals negative 1.9 3 6 6 4 5 1 6 5 7 4
D
2
=
C
D
s
i
n
1
8
0
+
6
0
equals
=
negative 1.9 3 6 6 4 5 1 6 5 7 4
−
1
.
9
3
6
6
4
5
1
6
5
7
4
13
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14
Expression 15: "y" less than 40 Has graph. To audio trace, press ALT+T.
y
<
4
0
15
Expression 16: polygon left parenthesis, "A" , "C" , "A" , "B" , "D" , "B" , "C" , "D" , right parenthesis Has graph.
p
o
l
y
g
o
n
A
,
C
,
A
,
B
,
D
,
B
,
C
,
D
16
Points
Points
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17
33
powered by
powered by
A
B
C
D
20
10
60
60
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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