Homework Help: Trig

Posted by BreAnne on Thursday, February 16, 2012 at 4:20pm.

what is the amplitude, period, phase shift, and vertical shift of each equation?

1. y= A cos(B(x-3))+4
2. y=-2sin(2piX/3)
3. y=4cos(3pi(x+3))
4. y= -3cos(2(x-pi/4))+0.4

thank you so much!

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