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表达式30: "H" Subscript, 1 , Baseline equals StartFraction, "F" Subscript, 2 , Baseline Over tan "A" Subscript, "D" "E" , Baseline , EndFraction plus "F" Subscript, 1 , Baseline
H
1
=
F
2
t
a
n
A
D
E
+
F
1
equals
=
4.1 0 4 2 4 1 7 1 9 9 1
4
.
1
0
4
2
4
1
7
1
9
9
1
30
表达式31: "H" Subscript, 2 , Baseline equals "A" Subscript, 2 , Baseline
H
2
=
A
2
equals
=
0
0
31
Graphs
Graphs
对学生隐藏该文件夹。
32
表达式33: polygon left parenthesis, "D" , "E" , "G" , "H" , right parenthesis
p
o
l
y
g
o
n
D
,
E
,
G
,
H
33
表达式34: polygon left parenthesis, "E" , "F" , "G" , right parenthesis
p
o
l
y
g
o
n
E
,
F
,
G
34
表达式35: left parenthesis, "s" cos "t" , "s" sin "t" , right parenthesis
s
c
o
s
t
,
s
s
i
n
t
定义域t最小值： 40
4
0
less than or equal to "t" less than or equal to
≤
t
≤
定义域t最大值： 70
7
0
35
表达式36: polygon left parenthesis, "A" , "B" , "C" , "D" , right parenthesis
p
o
l
y
g
o
n
A
,
B
,
C
,
D
36
表达式37: left parenthesis, "s" cos "t" , "s" sin "t" , right parenthesis
s
c
o
s
t
,
s
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： 90
9
0
37
表达式38: polygon left parenthesis, "E" , "F" , right parenthesis
p
o
l
y
g
o
n
E
,
F
38
表达式39: polygon left parenthesis, "A" , "F" , right parenthesis
p
o
l
y
g
o
n
A
,
F
39
表达式40: polygon left parenthesis, "A" , "E" , right parenthesis
p
o
l
y
g
o
n
A
,
E
40
表达式41: polygon left parenthesis, "D" , "E" , right parenthesis
p
o
l
y
g
o
n
D
,
E
41
表达式42: polygon left parenthesis, "F" , "H" , right parenthesis
p
o
l
y
g
o
n
F
,
H
42
Points
Points
对学生隐藏该文件夹。
43
NEW.jpg
NEW.jpg
更换图片
中心：
center: left parenthesis, negative 1.7 7 , 1.6 5 , right parenthesis
−
1
.
7
7
,
1
.
6
5
宽度：
width: 2.8 5 3
2
.
8
5
3
角度：
angle: 0
0
高度：
height: 2.8 5 3
2
.
8
5
3
不透明度：
opacity: 1
1
44
A: "A" equals left parenthesis, "A" Subscript, 1 , Baseline , "A" Subscript, 2 , Baseline , right parenthesis
A
=
A
1
,
A
2
标签:
equals
=
left parenthesis, 0 , 0 , right parenthesis
0
,
0
45
B: "B" equals left parenthesis, "B" Subscript, 1 , Baseline , "B" Subscript, 2 , Baseline , right parenthesis
B
=
B
1
,
B
2
标签:
equals
=
left parenthesis, 0 , 6 , right parenthesis
0
,
6
46
C: "C" equals left parenthesis, "C" Subscript, 1 , Baseline , "C" Subscript, 2 , Baseline , right parenthesis
C
=
C
1
,
C
2
标签:
equals
=
left parenthesis, 6 , 6 , right parenthesis
6
,
6
47
E: "E" equals left parenthesis, "E" Subscript, 1 , Baseline , "E" Subscript, 2 , Baseline , right parenthesis
E
=
E
1
,
E
2
标签:
equals
=
left parenthesis, 4.5 9 6 2 6 6 6 6 , 3.8 5 6 7 2 5 6 6 , right parenthesis
4
.
5
9
6
2
6
6
6
6
,
3
.
8
5
6
7
2
5
6
6
48
F: "F" equals left parenthesis, "F" Subscript, 1 , Baseline , "F" Subscript, 2 , Baseline , right parenthesis
F
=
F
1
,
F
2
标签:
equals
=
left parenthesis, 2.0 5 2 1 2 0 8 6 , 5.6 3 8 1 5 5 7 2 , right parenthesis
2
.
0
5
2
1
2
0
8
6
,
5
.
6
3
8
1
5
5
7
2
49
G: "G" equals left parenthesis, "G" Subscript, 1 , Baseline , "G" Subscript, 2 , Baseline , right parenthesis
G
=
G
1
,
G
2
标签:
equals
=
left parenthesis, 3.1 4 4 0 3 1 5 6 , 2.6 3 8 1 5 5 7 2 , right parenthesis
3
.
1
4
4
0
3
1
5
6
,
2
.
6
3
8
1
5
5
7
2
50
H: "H" equals left parenthesis, "H" Subscript, 1 , Baseline , "H" Subscript, 2 , Baseline , right parenthesis
H
=
H
1
,
H
2
标签:
equals
=
left parenthesis, 4.1 0 4 2 4 1 7 2 , 0 , right parenthesis
4
.
1
0
4
2
4
1
7
2
,
0
51
D: "D" equals left parenthesis, "s" , "D" Subscript, 2 , Baseline , right parenthesis
D
=
s
,
D
2
标签:
equals
=
left parenthesis, 6 , 0 , right parenthesis
6
,
0
52
40° left parenthesis, .8 5cos theta Subscript, 1 , Baseline , .8 5sin theta Subscript, 1 , Baseline , right parenthesis
.
8
5
c
o
s
θ
1
,
.
8
5
s
i
n
θ
1
标签:
equals
=
left parenthesis, 0.8 0 1 9 8 5 3 4 , 0.2 8 1 6 3 7 2 1 , right parenthesis
0
.
8
0
1
9
8
5
3
4
,
0
.
2
8
1
6
3
7
2
1
53
30° left parenthesis, cos theta Subscript, 2 , Baseline , sin theta Subscript, 2 , Baseline , right parenthesis
c
o
s
θ
2
,
s
i
n
θ
2
标签:
equals
=
left parenthesis, 0.6 0 1 8 1 5 0 2 , 0.7 9 8 6 3 5 5 1 , right parenthesis
0
.
6
0
1
8
1
5
0
2
,
0
.
7
9
8
6
3
5
5
1
54
70° left parenthesis, "H" Subscript, 1 , Baseline plus .5 6cos theta Subscript, 3 , Baseline , "H" Subscript, 2 , Baseline plus .5 6sin theta Subscript, 3 , Baseline , right parenthesis
H
1
+
.
5
6
c
o
s
θ
3
,
H
2
+
.
5
6
s
i
n
θ
3
标签:
equals
=
left parenthesis, 3.6 1 7 3 5 3 5 3 , 0.2 7 6 6 5 8 4 3 , right parenthesis
3
.
6
1
7
3
5
3
5
3
,
0
.
2
7
6
6
5
8
4
3
55
表达式56: theta Subscript, 1 , Baseline equals StartFraction, "D" Subscript, "A" "E" , Baseline Over 2 , EndFraction minus 0.6 5
θ
1
=
D
A
E
2
−
0
.
6
5
equals
=
19.3 5
1
9
.
3
5
56
表达式57: theta Subscript, 2 , Baseline equals "D" Subscript, "A" "E" , Baseline plus StartFraction, "E" Subscript, "A" "F" , Baseline Over 2 , EndFraction minus 2
θ
2
=
D
A
E
+
E
A
F
2
−
2
equals
=
53
5
3
57
表达式58: theta Subscript, 3 , Baseline equals 180 minus StartFraction, "A" Subscript, "H" "F" , Baseline Over 2 , EndFraction plus 5.3 9 4
θ
3
=
1
8
0
−
A
H
F
2
+
5
.
3
9
4
equals
=
150.3 9 4
1
5
0
.
3
9
4
58
6 centimeter: left parenthesis, "A" Subscript, 1 , Baseline minus .0 4 2 5 , StartFraction, "B" Subscript, 2 , Baseline Over 2 , EndFraction , right parenthesis
A
1
−
.
0
4
2
5
,
B
2
2
标签:
equals
=
left parenthesis, negative 0.0 4 2 5 , 3 , right parenthesis
−
0
.
0
4
2
5
,
3
59
60
技术支持
技术支持
A
B
C
E
F
G
H
D
40°
30°
70°
6 centimeter
"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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