Test:
Trigonometric Functions I - Ambitious
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Question 1:
Compare these two angles expressed in radians:
π
4
and
1
.
A
π
4
<
1
B
π
4
>
1
C
π
4
≥
1
D
π
4
=
1
Question 2:
Solve the expression
s
i
n
0
+
t
g
π
−
c
o
s
2
π
.
A
−
1
B
−
1
2
C
1
D
0
Question 3:
Which of these functions can be equal to
6
2
:
1
)
s
i
n
α
2
)
c
o
s
α
3
)
t
g
α
A
1) and 3)
B
3)
C
2)
D
1) and 2)
Question 4:
Solve the expression
sin
2
−
30
°
+
cos
2
−
60
°
.
A
3
−
1
2
B
1
+
3
2
C
−
1
2
D
1
2
Question 5:
Compare two expressions:
s
i
n
20
°
and
s
i
n
21
°
.
A
s
i
n
20
°
=
s
i
n
21
°
B
s
i
n
20
°
≤
s
i
n
21
°
C
s
i
n
20
°
<
s
i
n
21
°
D
s
i
n
20
°
>
s
i
n
21
°
Question 6:
Compare two expressions:
t
g
−
60
°
and
t
g
−
40
°
.
A
t
g
−
60
°
<
t
g
−
40
°
B
t
g
−
60
°
>
t
g
−
40
°
C
t
g
−
60
°
=
t
g
−
40
°
D
t
g
−
60
°
≥
t
g
−
40
°
Question 7:
Simplify the expression
1
+
c
t
g
β
2
+
1
−
c
t
g
β
2
.
A
2
B
2
c
t
g
β
C
1
sin
2
β
D
2
sin
2
β
Question 8:
Simplify the expression
sin
30
°
−
α
+
cos
60
°
−
α
.
A
3
s
i
n
α
B
c
o
s
α
−
3
s
i
n
α
2
C
c
o
s
α
D
s
i
n
α
2
Question 9:
Simplify the expression
t
g
π
2
+
α
−
c
t
g
π
−
α
.
A
1
B
t
g
α
C
0
D
−
c
t
g
α
2
Question 10:
Simplify the expression
1
−
c
o
s
2
α
sin
2
α
.
A
c
t
g
α
B
−
t
g
α
C
2
D
1
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