Graphing Sine and Cosine — Unit test Answers
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What is the equation of the graph below?
A
y = sine (x + 90 degrees)
B
y = cosine (x + 90 degrees)
C
y = sine (x + 45 degrees)
D
y = cosine (x + 45 degrees)
22
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An arc of length 8 in. is intersected by a central angle in a circle with a radius of 3 in. What is the measure of the angle? Round your answer to the nearest tenth.
A
0.4 radianB
1.0 radianC
2.7 radiansD
5.0 radians23
Which of the following is the graph of y = cos(2x)?
A
mc008-1.jpg
B
mc008-2.jpg
C
mc008-3.jpg
D
mc008-4.jpg
24
Angle D has a measure between 0° and 360° and is coterminal with a –920° angle. What is the measure of angle D?
A
155°B
160°C
165°D
170°25
How is the graph of transformed to produce the graph of ?
A
The graph is translated left 5 units, compressed vertically by a factor of , and translated up 3 units.
B
The graph is stretched vertically by a factor of , translated left 5 units, and translated up 3 units.
C
The graph is translated left 5 units, compressed horizontally by a factor of , and translated down 3 units.
D
The graph is stretched horizontally by a factor of , translated left 5 units, and translated down 3 units.
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