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Homework Help: Re-arranging cosh to make x the subject

  1. Jan 29, 2013 #1
    Hi everyone, my first post so forgive me if its rubbish!
    I have been set a question in my HNC course and have hit a wall with where to proceed with it. I would just post the question but rather than that and you giving me the answer I would rather learn how to do it myself, so I will answer a similar one.

    I need to calculate x in the following when y = 50

    How would I go about making x the subject so I can calculate it? Or is it even more simple than that?
    Any help is greatly appreciated
  2. jcsd
  3. Jan 29, 2013 #2


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    Science Advisor
    Homework Helper
    Gold Member

    There is a defined function for this, arccosh.
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