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表达式21: "C" Subscript, 2 , Baseline equals "R" sine left parenthesis, negative 90 plus StartFraction, "A" Subscript, "O" "C" , Baseline Over 2 , EndFraction , right parenthesis
C
2
=
R
s
i
n
−
9
0
+
A
O
C
2
equals
=
negative 5.5 0 5 9 7 7 6 1 2 8 9
−
5
.
5
0
5
9
7
7
6
1
2
8
9
21
表达式22: "D" Subscript, 1 , Baseline equals "B" Subscript, 1 , Baseline plus StartFraction, "S" Over 2 , EndFraction cosine 60
D
1
=
B
1
+
S
2
c
o
s
6
0
equals
=
1.1 9 2 0 7 9 1 2 1 3 6
1
.
1
9
2
0
7
9
1
2
1
3
6
22
表达式23: "D" Subscript, 2 , Baseline equals "B" Subscript, 2 , Baseline plus StartFraction, "S" Over 2 , EndFraction sine 60
D
2
=
B
2
+
S
2
s
i
n
6
0
equals
=
0.6 8 8 2 4 7 2 0 1 6 1 2
0
.
6
8
8
2
4
7
2
0
1
6
1
2
23
表达式24: "E" Subscript, 1 , Baseline equals "D" Subscript, 1 , Baseline plus "S" cosine 60
E
1
=
D
1
+
S
c
o
s
6
0
equals
=
3.5 7 6 2 3 7 3 6 4 0 8
3
.
5
7
6
2
3
7
3
6
4
0
8
24
表达式25: "E" Subscript, 2 , Baseline equals "D" Subscript, 2 , Baseline plus "S" sine 60
E
2
=
D
2
+
S
s
i
n
6
0
equals
=
4.8 1 7 7 3 0 4 1 1 2 8
4
.
8
1
7
7
3
0
4
1
1
2
8
25
表达式26: "F" Subscript, 1 , Baseline equals "D" Subscript, 1 , Baseline plus "S"
F
1
=
D
1
+
S
equals
=
5.9 6 0 3 9 5 6 0 6 7 9
5
.
9
6
0
3
9
5
6
0
6
7
9
26
表达式27: "F" Subscript, 2 , Baseline equals "D" Subscript, 2 , Baseline
F
2
=
D
2
equals
=
0.6 8 8 2 4 7 2 0 1 6 1 2
0
.
6
8
8
2
4
7
2
0
1
6
1
2
27
表达式28: "G" Subscript, 1 , Baseline equals "F" Subscript, 1 , Baseline minus StartFraction, "S" Over 2 , EndFraction
G
1
=
F
1
−
S
2
equals
=
3.5 7 6 2 3 7 3 6 4 0 8
3
.
5
7
6
2
3
7
3
6
4
0
8
28
表达式29: "G" Subscript, 2 , Baseline equals "F" Subscript, 2 , Baseline
G
2
=
F
2
equals
=
0.6 8 8 2 4 7 2 0 1 6 1 2
0
.
6
8
8
2
4
7
2
0
1
6
1
2
29
表达式30: "H" Subscript, 1 , Baseline equals "G" Subscript, 1 , Baseline plus "S" cosine negative 120
H
1
=
G
1
+
S
c
o
s
−
1
2
0
equals
=
1.1 9 2 0 7 9 1 2 1 3 6
1
.
1
9
2
0
7
9
1
2
1
3
6
30
表达式31: "H" Subscript, 2 , Baseline equals "G" Subscript, 2 , Baseline plus "S" sine negative 120
H
2
=
G
2
+
S
s
i
n
−
1
2
0
equals
=
negative 3.4 4 1 2 3 6 0 0 8 0 6
−
3
.
4
4
1
2
3
6
0
0
8
0
6
31
表达式32: "J" Subscript, 1 , Baseline equals "G" Subscript, 1 , Baseline minus "S"
J
1
=
G
1
−
S
equals
=
negative 1.1 9 2 0 7 9 1 2 1 3 6
−
1
.
1
9
2
0
7
9
1
2
1
3
6
32
表达式33: "J" Subscript, 2 , Baseline equals "G" Subscript, 2 , Baseline
J
2
=
G
2
equals
=
0.6 8 8 2 4 7 2 0 1 6 1 2
0
.
6
8
8
2
4
7
2
0
1
6
1
2
33
表达式34: "M" Subscript, 1 , Baseline equals "H" Subscript, 1 , Baseline
M
1
=
H
1
equals
=
1.1 9 2 0 7 9 1 2 1 3 6
1
.
1
9
2
0
7
9
1
2
1
3
6
34
表达式35: "M" Subscript, 2 , Baseline equals "H" Subscript, 2 , Baseline plus "H" Subscript, "M" , Baseline
M
2
=
H
2
+
H
M
equals
=
negative 0.6 8 8 2 4 7 2 0 1 6 1 2
−
0
.
6
8
8
2
4
7
2
0
1
6
1
2
35
Graphs
Graphs
对学生隐藏该文件夹。
36
表达式37: "y" less than 30
y
<
3
0
37
表达式38: left parenthesis, "M" Subscript, 1 , Baseline plus "R" Subscript, 1 , Baseline cos "t" , "M" Subscript, 2 , Baseline plus "R" Subscript, 1 , Baseline sin "t" , right parenthesis
M
1
+
R
1
c
o
s
t
,
M
2
+
R
1
s
i
n
t
0
0
定义域t最小值：
less than or equal to "t" less than or equal to
≤
t
≤
定义域t最大值： 360
3
6
0
38
表达式39: polygon left parenthesis, "A" , "C" , "A" , "B" , "J" , "D" , "E" , "F" , "D" , "G" , "H" , "B" , "C" , right parenthesis
p
o
l
y
g
o
n
A
,
C
,
A
,
B
,
J
,
D
,
E
,
F
,
D
,
G
,
H
,
B
,
C
39
表达式40: left parenthesis, "M" Subscript, 1 , Baseline plus "R" Subscript, 1 , Baseline cos "t" , "M" Subscript, 2 , Baseline plus "R" Subscript, 1 , Baseline sin "t" , right parenthesis
M
1
+
R
1
c
o
s
t
,
M
2
+
R
1
s
i
n
t
0
0
定义域t最小值：
less than or equal to "t" less than or equal to
≤
t
≤
定义域t最大值： 360
3
6
0
40
表达式41: left parenthesis, "R" cos "t" , "R" sin "t" , right parenthesis
R
c
o
s
t
,
R
s
i
n
t
0
0
定义域t最小值：
less than or equal to "t" less than or equal to
≤
t
≤
定义域t最大值： 360
3
6
0
41
Points
Points
对学生隐藏该文件夹。
42
59
技术支持
技术支持
O
A
B
C
D
E
F
G
H
J
M
|
|
|
|
"x"
x
"y"
y
"a" squared
a
2
"a" Superscript, "b" , Baseline
a
b
7
7
8
8
9
9
over
÷
功能
(
(
)
)
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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