1.
Which is the graph of
y
= cos 3
?
A.
B.
C.
D.
Hint
2.
Write the equation of the sine function if the amplitude is 5 and the period is 360°.
A.
y
= - sin 5
B.
y
= 5 sin
C.
y
= sin 5
D.
y
= -5 sin 5
Hint
3.
Simplify sin
.
A.
sin
x
+ cos
2
x
B.
2 sin
x
C.
2 cos
x
D.
tan
x
Hint
4.
Express
using only sin
x
and cos
x
.
A.
cos
2
x
B.
sin
x
+ cos
x
C.
sin
x
- cos
x
D.
Hint
5.
Find the exact value of sin 225°.
A.
B.
C.
D.
0
Hint
6.
What is the exact value of cos (-60°)?
A.
B.
0
C.
D.
-1
Hint
7.
Determine sin 2
x
if
x
is between 180° and 270° and sin
x
=
.
A.
B.
C.
D.
Hint
8.
How is the function
y
= sin
+ 2 shifted?
A.
shifted 2 units up
B.
shifted 2 units to the right
C.
shifted 2 units to the left
D.
shifted 2 units down
Hint
9.
Which of the following is an example of a function with a phase shift?
A.
y
= 3 + cos
B.
y
= 1 + 3 cos
C.
y
= 5 sin
D.
y
= 2 sin (
– 15)
Hint
10.
Suppose tan
=
. Which of the following quadrants could contain
?
A.
second only
B.
first and second
C.
first only
D.
first and third
Hint
11.
Which expression is equivalent to 2 tan
?
A.
B.
C.
D.
Hint
12.
Given that cos
=
and 0° <
< 90°, find cos 2
.
A.
B.
C.
D.
Hint
13.
Which of the following contains a false solution to the equation sin
cot
– cos
2
= 0?
A.
90° and 270°
B.
0° and 180°
C.
90°
D.
0° and 270°
Hint
14.
Solve
.
A.
0°, 90°, 180°, 270°
B.
90°, 270°
C.
0°, 90°, 270°
D.
0°, 180°
Hint