This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Washing line dip. Graph showing amount of dip in suspended line against length of line suspended one unit apart Own work generated in Microsoft Excel based on formulae provided org php title Referencedesk oldid Washinglinemathematics here Optimist on the run Public domain Hyperbolic functions Images created by User Optimist