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Missing Angle DBO = 115°
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Expression 13: "B" Subscript, 1 , Baseline equals left parenthesis, "A" Subscript, "O" , Baseline plus 2.7 4 5 , right parenthesis cosine left parenthesis, 100 minus 70 halves , right parenthesis equals 3.7 3 8 0 5 8 5 2 5 1
B
1
=
A
O
+
2
.
7
4
5
c
o
s
1
0
0
−
7
0
2
equals
=
3.7 3 8 0 5 8 5 2 5 1
3
.
7
3
8
0
5
8
5
2
5
1
13
Expression 14: "B" Subscript, 2 , Baseline equals left parenthesis, "A" Subscript, "O" , Baseline plus 2.7 4 5 , right parenthesis sine left parenthesis, 100 minus 70 halves , right parenthesis equals 8.0 1 6 2 9 2 3 7 6 3 4
B
2
=
A
O
+
2
.
7
4
5
s
i
n
1
0
0
−
7
0
2
equals
=
8.0 1 6 2 9 2 3 7 6 3 4
8
.
0
1
6
2
9
2
3
7
6
3
4
14
Expression 15: "C" Subscript, 1 , Baseline equals "A" Subscript, 2 , Baseline cosine 30 equals 5.2 0 2 4 9 8 0 4 4 9 1
C
1
=
A
2
c
o
s
3
0
equals
=
5.2 0 2 4 9 8 0 4 4 9 1
5
.
2
0
2
4
9
8
0
4
4
9
1
15
Expression 16: "C" Subscript, 2 , Baseline equals "A" Subscript, 2 , Baseline sine 30 equals 3.0 0 3 6 6 3 6 4 6 6 9
C
2
=
A
2
s
i
n
3
0
equals
=
3.0 0 3 6 6 3 6 4 6 6 9
3
.
0
0
3
6
6
3
6
4
6
6
9
16
Expression 17: "D" Subscript, 1 , Baseline equals "B" Subscript, 1 , Baseline plus 3 equals 6.7 3 8 0 5 8 5 2 5 1
D
1
=
B
1
+
3
equals
=
6.7 3 8 0 5 8 5 2 5 1
6
.
7
3
8
0
5
8
5
2
5
1
17
Expression 18: "D" Subscript, 2 , Baseline equals "B" Subscript, 2 , Baseline equals 8.0 1 6 2 9 2 3 7 6 3 4
D
2
=
B
2
equals
=
8.0 1 6 2 9 2 3 7 6 3 4
8
.
0
1
6
2
9
2
3
7
6
3
4
18
Graphs
Graphs
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19
Expression 20: "y" less than 25 Has graph. To audio trace, press ALT+T.
y
<
2
5
20
Expression 21: left parenthesis, "A" Subscript, 1 , Baseline minus "t" 3 , "A" Subscript, 2 , Baseline , right parenthesis Has graph.
A
1
−
t
3
,
A
2
0
0
domain t Minimum:
less than or equal to "t" less than or equal to
≤
t
≤
1
1
domain t Maximum:
21
Expression 22: left parenthesis, "C" Subscript, 1 , Baseline plus "t" 3 , "C" Subscript, 2 , Baseline , right parenthesis Has graph.
C
1
+
t
3
,
C
2
0
0
domain t Minimum:
less than or equal to "t" less than or equal to
≤
t
≤
1
1
domain t Maximum:
22
Expression 23: left parenthesis, "B" Subscript, 1 , Baseline plus "t" 3 , "B" Subscript, 2 , Baseline , right parenthesis Has graph.
B
1
+
t
3
,
B
2
0
0
domain t Minimum:
less than or equal to "t" less than or equal to
≤
t
≤
1
1
domain t Maximum:
23
Expression 24: polygon left parenthesis, "A" , "O" , "B" , "O" , "C" , "O" , right parenthesis Has graph.
p
o
l
y
g
o
n
A
,
O
,
B
,
O
,
C
,
O
24
Points
Points
Hide this folder from students.
25
40
powered by
powered by
O
A
B
C
D
?
100
150
"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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