Question 702852
Y= cos beta over 2 plus 2 
What is the Amplitude, phase shift, vertical shift, and period?
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Equation for cos function: y=Acos(Bx-C), A=amplitude, period=2π/B, Phase shift=C/B
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For given cos function: y=cos(x/2)+2 (using x for beta)
Amplitude=1
B=1/2
Period=2π/B=2π/(1/2)=4π
C=0
Phase shift: none
Vertical shift: 2 units up