Thread: Little math problem

  1. #1
    & the hat of GPL slaying Thantos's Avatar
    Join Date
    Sep 2001

    Little math problem

    Ok for the life of me I can't remember how to do this.
    Say I have an equasion:
    and I want to solve for x.
    I can get to:
    But how do I turn sin(x)= to x=???
    Its been a long time since I've taken any math classes.


  2. #2
    geek SilentStrike's Avatar
    Join Date
    Aug 2001
    arcsin, perhaps its sin^-1 on your calculator, or asin in <cmath>

    That equation has an infinite number of solutions, due to the periodic nature of sine.

    where n is any integer, the solutions to that are

    y = 2*pi*n + x
    Prove you can code in C++ or C# at TopCoder, referrer rrenaud
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  3. #3
    Former Member
    Join Date
    Oct 2001
    you can arcsine at both sides of the equation, and you get


    but, as SilentStrike said, this is not completely accurate because there are infinite values for x for that sin(x) is equal.

    but arcsining would do the trick


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