1.
Graph
y
=
.
A.
B.
C.
D.
Hint
2.
Write an equation of the function whose graph is shown.
A.
y
= 2 sin
B.
y
= sin 4
C.
y
= 4 sin
D.
y
= 2 sin
Hint
3.
Find cot
if 180° <
< 270° and cos
.
A.
B.
C.
D.
Hint
4.
Simplify sin
A
sec
A
.
A.
cos
A
B.
sin
A
C.
cot
A
D.
tan
A
Hint
5.
Find all solutions of sin 2
x
= cos
x
if
.
A.
,
B.
,
C.
,
D.
,
Hint
6.
A runner's pace oscillates during a race between 9 mph and 13 mph. For a one-hour race, this person's pace oscillates 20 times. What is a sine function that represents this situation?
A.
y
= 2 sin
+ 9
B.
y
= 2 sin
+ 11
C.
y
= 4 sin
+ 9
D.
y
= 4 sin
+ 11
Hint
7.
Which of the following is an example of a function with a phase shift?
A.
y
= 2 sin (
15)
B.
y
= 1 + 3 cos
C.
y
= 5 sin
D.
y
= 3 + cos
Hint
8.
Simplify
.
A.
csc
B.
sec
2
C.
sec
D.
csc
2
Hint
9.
Which of the following statements is not true?
A.
sec
+ cos
= sin
tan
B.
sec
tan
=
C.
cot
tan
D.
csc
sin
= cot
cos
Hint
10.
Which expression is equivalent to sin
?
A.
cos (
+ 180°)
B.
cos (270° +
)
C.
sin (180°
)
D.
cos (90° +
)
Hint
11.
Which statement is true?
A.
sin 45° = cos (45°)
B.
cos 135° = sin 45°
C.
cos 225° = sin 45°
D.
sin 30° = cos 300°
Hint
12.
Find cos
if sin
x
=
and
x
is in the second quadrant.
A.
B.
C.
D.
Hint
13.
Given that cos
=
and 0° <
< 90°, find cos 2
.
A.
B.
C.
D.
Hint
14.
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.
0° and 270°
D.
90°
Hint