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OpenStudy (anonymous):
A sound wave is modeled with the equation y=1/4 cos 2pi/3theta. Find the period. Explain your method. Find the amplitude. Explain your method. What is the equation of the midline? What does it represent? Please help and explain this. I don't understand this at all!
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OpenStudy (anonymous):
What is the amplitude of cos theta?
OpenStudy (anonymous):
1/4 @optiquest
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