How Many Wavelengths Between a Node and an Antinode in a Standing Wave?

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Homework Statement


If you go any node in a standing wave to the next adjoining antinode, how many wavelengths have you gone?


Homework Equations





The Attempt at a Solution

 
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draw a sine and or cosine function of radians vs amplitude. There is no way to describe this without giving the answer

which would be 1/2