Determine Amplitude/period/phase shift /graph function. over 1 period.
Indicate xintercepts and coordinates of Hi/low points on graph.
y = cos (2x - pi/3) +1
y = A ( Bx - C )
so Amplitude is 1
Period: 2pi/B--> 2pi/2 = Pi
Okay is my phase shift right?
Phaseshift = C/B
pi
----
3
--------------- = pi/6?
2

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looks good to me
i never remember the formula, so i set \(2x-\frac{\pi}{3}=0\) and solve for \(x\)

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