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Proof that FG = R₁
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運算式 23: "D" Subscript, 2 , Baseline equals "A" Subscript, 2 , Baseline plus left parenthesis, "A" Subscript, "C" , Baseline minus "R" Subscript, 1 , Baseline , right parenthesis sine StartFraction, "B" Subscript, "O" "C" , Baseline Over 2 , EndFraction
D
2
=
A
2
+
A
C
−
R
1
s
i
n
B
O
C
2
equals
=
6.1 2 2 3 1 3 5 7 7 0 2
6
.
1
2
2
3
1
3
5
7
7
0
2
23
運算式 24: "E" Subscript, 1 , Baseline equals "B" Subscript, 1 , Baseline minus left parenthesis, "B" Subscript, "C" , Baseline minus "R" Subscript, 1 , Baseline , right parenthesis sine StartFraction, "B" Subscript, "O" "C" , Baseline Over 2 , EndFraction
E
1
=
B
1
−
B
C
−
R
1
s
i
n
B
O
C
2
equals
=
1.5 3 7 5 4 1 1 3 3 0 1
1
.
5
3
7
5
4
1
1
3
3
0
1
24
運算式 25: "E" Subscript, 2 , Baseline equals "B" Subscript, 2 , Baseline plus left parenthesis, "B" Subscript, "C" , Baseline minus "R" Subscript, 1 , Baseline , right parenthesis cosine StartFraction, "B" Subscript, "O" "C" , Baseline Over 2 , EndFraction
E
2
=
B
2
+
B
C
−
R
1
c
o
s
B
O
C
2
equals
=
6.4 8 7 0 1 6 5 2 4 5 7
6
.
4
8
7
0
1
6
5
2
4
5
7
25
運算式 26: tangent to the negative 1st power StartFraction, "F" Subscript, 1 , Baseline minus "H" Subscript, 1 , Baseline Over "C" Subscript, 2 , Baseline , EndFraction equals StartFraction, "B" Subscript, "O" "C" , Baseline Over 2 times 2 , EndFraction
t
a
n
−
1
F
1
−
H
1
C
2
=
B
O
C
2
·
2
26
運算式 27: "F" Subscript, 1 , Baseline equals "C" Subscript, 2 , Baseline tangent left parenthesis, StartFraction, "B" Subscript, "O" "C" , Baseline Over 2 times 2 , EndFraction , right parenthesis plus "H" Subscript, 1 , Baseline
F
1
=
C
2
t
a
n
B
O
C
2
·
2
+
H
1
equals
=
2.8 0 9 0 6 2 5 2 1 8 3
2
.
8
0
9
0
6
2
5
2
1
8
3
27
運算式 28: "F" Subscript, 2 , Baseline equals "O" Subscript, 2 , Baseline
F
2
=
O
2
equals
=
0
0
28
運算式 29: "G" Subscript, 1 , Baseline equals "M" Subscript, 1 , Baseline
G
1
=
M
1
equals
=
negative 0.8 8 7 8 5 4 9 6 1 0 9
−
0
.
8
8
7
8
5
4
9
6
1
0
9
29
運算式 30: "G" Subscript, 2 , Baseline equals "O" Subscript, 2 , Baseline
G
2
=
O
2
equals
=
0
0
30
運算式 31: "H" Subscript, 1 , Baseline equals "C" Subscript, 1 , Baseline
H
1
=
C
1
equals
=
negative 1.2 5 2 5 5 7 9 0 8 6 4
−
1
.
2
5
2
5
5
7
9
0
8
6
4
31
運算式 32: "H" Subscript, 2 , Baseline equals "O" Subscript, 2 , Baseline
H
2
=
O
2
equals
=
0
0
32
運算式 33: "M" Subscript, 1 , Baseline equals "A" Subscript, 1 , Baseline plus "A" Subscript, "M" , Baseline cosine StartFraction, "B" Subscript, "O" "C" , Baseline Over 4 , EndFraction
M
1
=
A
1
+
A
M
c
o
s
B
O
C
4
equals
=
negative 0.8 8 7 8 5 4 9 6 1 0 9
−
0
.
8
8
7
8
5
4
9
6
1
0
9
33
運算式 34: "M" Subscript, 2 , Baseline equals "A" Subscript, "M" , Baseline sine StartFraction, "B" Subscript, "O" "C" , Baseline Over 4 , EndFraction
M
2
=
A
M
s
i
n
B
O
C
4
equals
=
3.6 9 6 9 1 7 4 8 2 9 2
3
.
6
9
6
9
1
7
4
8
2
9
2
34
Graphs
Graphs
對學生隱藏此資料夾。
35
運算式 36: "y" less than 25
y
<
2
5
36
運算式 37: 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
定義域 t 最小值：
less than or equal to "t" less than or equal to
≤
t
≤
定義域 t 最大值： 360
3
6
0
37
運算式 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
定義域 t 最小值：
less than or equal to "t" less than or equal to
≤
t
≤
定義域 t 最大值： 360
3
6
0
38
運算式 39: polygon left parenthesis, "A" , "B" , "C" , "D" , right parenthesis
p
o
l
y
g
o
n
A
,
B
,
C
,
D
39
運算式 40: left parenthesis, "R" cos "t" , "R" sin "t" , right parenthesis
R
c
o
s
t
,
R
s
i
n
t
0
0
定義域 t 最小值：
less than or equal to "t" less than or equal to
≤
t
≤
定義域 t 最大值： 180
1
8
0
40
隱藏的 標籤 "G" , "M"
G
,
M
標籤
equals
=
left parenthesis, negative 0.8 8 7 9 , 0 , right parenthesis
−
0
.
8
8
7
9
,
0
left parenthesis, negative 0.8 8 7 9 , 3.6 9 7 , right parenthesis
−
0
.
8
8
7
9
,
3
.
6
9
7
41
隱藏的 標籤 "C" , "H"
C
,
H
標籤
equals
=
left parenthesis, negative 1.2 5 3 , 8.9 1 2 , right parenthesis
−
1
.
2
5
3
,
8
.
9
1
2
left parenthesis, negative 1.2 5 3 , 0 , right parenthesis
−
1
.
2
5
3
,
0
42
隱藏的 標籤 "M" , "F"
M
,
F
標籤
equals
=
left parenthesis, negative 0.8 8 7 9 , 3.6 9 7 , right parenthesis
−
0
.
8
8
7
9
,
3
.
6
9
7
left parenthesis, 2.8 0 9 , 0 , right parenthesis
2
.
8
0
9
,
0
43
隱藏的 標籤 "C" , "F"
C
,
F
標籤
equals
=
left parenthesis, negative 1.2 5 3 , 8.9 1 2 , right parenthesis
−
1
.
2
5
3
,
8
.
9
1
2
left parenthesis, 2.8 0 9 , 0 , right parenthesis
2
.
8
0
9
,
0
44
Points
Points
對學生隱藏此資料夾。
45
62
技術支援
技術支援
O
A
B
F
G
H
C
D
E
M
Start black, "R" Subscript, 1 , Baseline End black
R
1
Start black, "R" Subscript, 1 , Baseline End black
R
1
5 Right Triangles in a Semicircle
"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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