AP Precalculus Quiz
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TRIGONOMETRIC AND POLAR FUNCTIONS
Question 1
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Which equation shifts
y
=
cos
(
x
)
y=\cos(x)
y
=
cos
(
x
)
left by
π
/
3
\pi/3
π
/3
for an AC signal?
A
y
=
cos
(
x
+
π
3
)
y=\cos\left(x+\tfrac{\pi}{3}\right)
y
=
cos
(
x
+
3
π
)
B
y
=
cos
(
x
−
π
3
)
y=\cos\left(x-\tfrac{\pi}{3}\right)
y
=
cos
(
x
−
3
π
)
C
y
=
sin
(
x
+
π
3
)
y=\sin\left(x+\tfrac{\pi}{3}\right)
y
=
sin
(
x
+
3
π
)
D
y
=
cos
(
π
3
x
)
y=\cos\left(\tfrac{\pi}{3}x\right)
y
=
cos
(
3
π
x
)
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