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Angle AFC = X = 96°
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表达式21: "D" Subscript, 1 , Baseline equals negative "A" Subscript, 1 , Baseline
D
1
=
−
A
1
equals
=
negative 4.7 5 5 2 8 2 5 8 1 4 8
−
4
.
7
5
5
2
8
2
5
8
1
4
8
21
表达式22: "D" Subscript, 2 , Baseline equals "A" Subscript, 2 , Baseline
D
2
=
A
2
equals
=
1.5 4 5 0 8 4 9 7 1 8 7
1
.
5
4
5
0
8
4
9
7
1
8
7
22
表达式23: "E" Subscript, 1 , Baseline equals "R" cosine left parenthesis, 90 plus 2 alpha , right parenthesis
E
1
=
R
c
o
s
9
0
+
2
α
equals
=
negative 2.9 3 8 9 2 6 2 6 1 4 6
−
2
.
9
3
8
9
2
6
2
6
1
4
6
23
表达式24: "E" Subscript, 2 , Baseline equals "R" sine left parenthesis, 90 plus 2 alpha , right parenthesis
E
2
=
R
s
i
n
9
0
+
2
α
equals
=
negative 4.0 4 5 0 8 4 9 7 1 8 7
−
4
.
0
4
5
0
8
4
9
7
1
8
7
24
表达式25: "F" Subscript, 1 , Baseline equals "E" Subscript, 1 , Baseline
F
1
=
E
1
equals
=
negative 2.9 3 8 9 2 6 2 6 1 4 6
−
2
.
9
3
8
9
2
6
2
6
1
4
6
25
表达式26: "F" Subscript, 2 , Baseline equals "B" Subscript, 2 , Baseline plus StartFraction, "s" Over distance left parenthesis, "B" , "M" , right parenthesis , EndFraction left parenthesis, "M" Subscript, 2 , Baseline minus "B" Subscript, 2 , Baseline , right parenthesis
F
2
=
B
2
+
s
d
i
s
t
a
n
c
e
B
,
M
M
2
−
B
2
equals
=
negative 0.0 9 0 3 6 9 6 0 4 5 5 1 3
−
0
.
0
9
0
3
6
9
6
0
4
5
5
1
3
26
表达式27: "G" Subscript, 1 , Baseline equals negative "E" Subscript, 1 , Baseline
G
1
=
−
E
1
equals
=
2.9 3 8 9 2 6 2 6 1 4 6
2
.
9
3
8
9
2
6
2
6
1
4
6
27
表达式28: "G" Subscript, 2 , Baseline equals "E" Subscript, 2 , Baseline
G
2
=
E
2
equals
=
negative 4.0 4 5 0 8 4 9 7 1 8 7
−
4
.
0
4
5
0
8
4
9
7
1
8
7
28
表达式29: "M" Subscript, 1 , Baseline equals StartFraction, "A" Subscript, 1 , Baseline plus "C" Subscript, 1 , Baseline Over 2 , EndFraction
M
1
=
A
1
+
C
1
2
equals
=
negative 0.3 0 7 2 0 1 4 4 5 7 6 8
−
0
.
3
0
7
2
0
1
4
4
5
7
6
8
29
表达式30: "M" Subscript, 2 , Baseline equals StartFraction, "A" Subscript, 2 , Baseline plus "C" Subscript, 2 , Baseline Over 2 , EndFraction
M
2
=
A
2
+
C
2
2
equals
=
4.4 6 7 9 1 1 4 8 7 7 7
4
.
4
6
7
9
1
1
4
8
7
7
7
30
Graphs
Graphs
对学生隐藏该文件夹。
31
表达式32: polygon left parenthesis, "A" , "B" , "D" , "E" , "G" , right parenthesis
p
o
l
y
g
o
n
A
,
B
,
D
,
E
,
G
32
隐藏 标签 left parenthesis, "A" Subscript, 1 , Baseline , "A" Subscript, 2 , Baseline , right parenthesis , left parenthesis, "C" Subscript, 1 , Baseline , "C" Subscript, 2 , Baseline , right parenthesis
A
1
,
A
2
,
C
1
,
C
2
标签
equals
=
left parenthesis, 4.7 5 5 , 1.5 4 5 , right parenthesis
4
.
7
5
5
,
1
.
5
4
5
left parenthesis, negative 5.3 7 , 7.3 9 1 , right parenthesis
−
5
.
3
7
,
7
.
3
9
1
33
隐藏 标签 left parenthesis, "B" Subscript, 1 , Baseline , "B" Subscript, 2 , Baseline , right parenthesis , left parenthesis, "F" Subscript, 1 , Baseline , "F" Subscript, 2 , Baseline , right parenthesis
B
1
,
B
2
,
F
1
,
F
2
标签
equals
=
left parenthesis, 0 , 5 , right parenthesis
0
,
5
left parenthesis, negative 2.9 3 9 , negative 0.0 9 0 3 7 , right parenthesis
−
2
.
9
3
9
,
−
0
.
0
9
0
3
7
34
表达式35: polygon left parenthesis, "B" , "C" , "D" , right parenthesis
p
o
l
y
g
o
n
B
,
C
,
D
35
隐藏 标签 left parenthesis, "R" cos "L" , "R" sin "L" , right parenthesis
R
c
o
s
L
,
R
s
i
n
L
标签
equals
=
left parenthesis, 4.7 5 5 , 1.5 4 5 , right parenthesis
4
.
7
5
5
,
1
.
5
4
5
left parenthesis, 0 , 5 , right parenthesis
0
,
5
left parenthesis, negative 4.7 5 5 , 1.5 4 5 , right parenthesis
−
4
.
7
5
5
,
1
.
5
4
5
left parenthesis, negative 2.9 3 9 , negative 4.0 4 5 , right parenthesis
−
2
.
9
3
9
,
−
4
.
0
4
5
left parenthesis, 2.9 3 9 , negative 4.0 4 5 , right parenthesis
2
.
9
3
9
,
−
4
.
0
4
5
left parenthesis, 4.7 5 5 , 1.5 4 5 , right parenthesis
4
.
7
5
5
,
1
.
5
4
5
36
表达式37: polygon left parenthesis, "C" , "D" , right parenthesis
p
o
l
y
g
o
n
C
,
D
37
表达式38: polygon left parenthesis, "B" , "C" , right parenthesis
p
o
l
y
g
o
n
B
,
C
38
表达式39: polygon left parenthesis, "C" , "F" , right parenthesis
p
o
l
y
g
o
n
C
,
F
39
表达式40: polygon left parenthesis, "A" , "F" , right parenthesis
p
o
l
y
g
o
n
A
,
F
40
表达式41: polygon left parenthesis, "E" , "F" , right parenthesis
p
o
l
y
g
o
n
E
,
F
41
Points
Points
对学生隐藏该文件夹。
42
60
技术支持
技术支持
O
A
B
C
D
E
F
G
M
X
"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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