Changes in Period and Phase Shift of Sine and Cosine Functions — Unit test Answers
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Which function will have a y-intercept at –1 and an amplitude of 2?
A
f (x) = negative sine (X) minus 1
B
f (x) = negative 2 sine (x) minus 1
C
f (x) = negative cosine (x)
D
f (x) = negative 2 cosine (x) minus 1
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
What is 270° converted to radians?
A
StartFraction pi Over 6 EndFraction
B
StartFraction 3 Over 2 EndFraction
C
StartFraction 3 pi Over 2 EndFraction
D
324
Three trigonometric functions for a given angle are shown below.What are the coordinates of point (x, y) on the terminal ray of angle , assuming that the values above were not simplified?
A
(–5, 12)B
(5, –12)C
(–12, 5)D
(12, –5)25
Which function describes the graph below?
A
y = 8 cosine (x) + 3
B
y = 4 cosine (x) + 3
C
y = 4 sine (x) + 3
D
y = 8 sine (x) + 3
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