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表达式18: "D" Subscript, 2 , Baseline equals "A" Subscript, 2 , Baseline
D
2
=
A
2
equals
=
0
0
18
表达式19: "E" Subscript, 1 , Baseline equals StartFraction, "R" Subscript, 2 , Baseline Over "R" Subscript, 1 , Baseline , EndFraction times left parenthesis, "C" Subscript, 1 , Baseline cos "G" Subscript, "A" "H" , Baseline , right parenthesis cosine "G" Subscript, "A" "H" , Baseline
E
1
=
R
2
R
1
·
C
1
c
o
s
G
A
H
c
o
s
G
A
H
equals
=
7.9 5 9 2 7 9 0 5 5 3 4
7
.
9
5
9
2
7
9
0
5
5
3
4
19
表达式20: "E" Subscript, 2 , Baseline equals StartFraction, "R" Subscript, 2 , Baseline Over "R" Subscript, 1 , Baseline , EndFraction times left parenthesis, "C" Subscript, 1 , Baseline cos "G" Subscript, "A" "H" , Baseline , right parenthesis sine "G" Subscript, "A" "H" , Baseline
E
2
=
R
2
R
1
·
C
1
c
o
s
G
A
H
s
i
n
G
A
H
equals
=
2.1 3 2 6 8 2 3 9 5 2 1
2
.
1
3
2
6
8
2
3
9
5
2
1
20
表达式21: "G" Subscript, 1 , Baseline equals StartFraction, "R" Subscript, 3 , Baseline Over "R" Subscript, 2 , Baseline , EndFraction times left parenthesis, "F" Subscript, 1 , Baseline cos "G" Subscript, "A" "H" , Baseline , right parenthesis cosine "G" Subscript, "A" "H" , Baseline
G
1
=
R
3
R
2
·
F
1
c
o
s
G
A
H
c
o
s
G
A
H
equals
=
13.5 1 8 0 1 0 6 7 4 6
1
3
.
5
1
8
0
1
0
6
7
4
6
21
表达式22: "G" Subscript, 2 , Baseline equals StartFraction, "R" Subscript, 3 , Baseline Over "R" Subscript, 2 , Baseline , EndFraction times left parenthesis, "F" Subscript, 1 , Baseline cos "G" Subscript, "A" "H" , Baseline , right parenthesis sine "G" Subscript, "A" "H" , Baseline
G
2
=
R
3
R
2
·
F
1
c
o
s
G
A
H
s
i
n
G
A
H
equals
=
3.6 2 2 1 4 0 0 4 3 5 4
3
.
6
2
2
1
4
0
0
4
3
5
4
22
表达式23: "F" Subscript, 1 , Baseline equals "C" Subscript, 1 , Baseline plus "R" Subscript, 1 , Baseline plus "R" Subscript, 2 , Baseline
F
1
=
C
1
+
R
1
+
R
2
equals
=
8.5 3 0 7 2 9 5 8 0 8 5
8
.
5
3
0
7
2
9
5
8
0
8
5
23
表达式24: "F" Subscript, 2 , Baseline equals "A" Subscript, 2 , Baseline
F
2
=
A
2
equals
=
0
0
24
表达式25: "H" Subscript, 1 , Baseline equals "F" Subscript, 1 , Baseline plus "R" Subscript, 2 , Baseline plus "R" Subscript, 3 , Baseline
H
1
=
F
1
+
R
2
+
R
3
equals
=
14.4 8 8 5 6 0 1 7 4 2
1
4
.
4
8
8
5
6
0
1
7
4
2
25
表达式26: "H" Subscript, 2 , Baseline equals "A" Subscript, 2 , Baseline
H
2
=
A
2
equals
=
0
0
26
表达式27: "K" Subscript, 1 , Baseline equals "G" Subscript, 1 , Baseline
K
1
=
G
1
equals
=
13.5 1 8 0 1 0 6 7 4 6
1
3
.
5
1
8
0
1
0
6
7
4
6
27
表达式28: "K" Subscript, 2 , Baseline equals negative "G" Subscript, 2 , Baseline
K
2
=
−
G
2
equals
=
negative 3.6 2 2 1 4 0 0 4 3 5 4
−
3
.
6
2
2
1
4
0
0
4
3
5
4
28
Graphs
Graphs
对学生隐藏该文件夹。
29
表达式30: left parenthesis, "C" Subscript, 1 , Baseline plus "R" Subscript, 1 , Baseline cos "t" , "C" Subscript, 2 , Baseline plus "R" Subscript, 1 , Baseline sin "t" , right parenthesis
C
1
+
R
1
c
o
s
t
,
C
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
30
表达式31: left parenthesis, "F" Subscript, 1 , Baseline plus "R" Subscript, 2 , Baseline cos "t" , "F" Subscript, 2 , Baseline plus "R" Subscript, 2 , Baseline sin "t" , right parenthesis
F
1
+
R
2
c
o
s
t
,
F
2
+
R
2
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
31
表达式32: left parenthesis, "H" Subscript, 1 , Baseline plus "R" Subscript, 3 , Baseline cos "t" , "H" Subscript, 2 , Baseline plus "R" Subscript, 3 , Baseline sin "t" , right parenthesis
H
1
+
R
3
c
o
s
t
,
H
2
+
R
3
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
32
表达式33: polygon left parenthesis, "A" , "G" , "H" , "K" , right parenthesis
p
o
l
y
g
o
n
A
,
G
,
H
,
K
33
表达式34: polygon left parenthesis, "E" , "F" , right parenthesis
p
o
l
y
g
o
n
E
,
F
34
表达式35: polygon left parenthesis, "B" , "C" , right parenthesis
p
o
l
y
g
o
n
B
,
C
35
Points
Points
对学生隐藏该文件夹。
36
49
技术支持
技术支持
A
B
E
G
D
C
F
H
K
Start black, "R" Subscript, 1 , Baseline End black
R
1
Start black, "R" Subscript, 2 , Baseline End black
R
2
Start black, "R" Subscript, 3 , Baseline End black
R
3
"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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