Little math problem

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  1. #1
    & the hat of GPL slaying Thantos's Avatar
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    Little math problem

    Ok for the life of me I can't remember how to do this.
    Say I have an equasion:
    sin(x)-sin(y)=0
    and I want to solve for x.
    I can get to:
    sin(x)=sin(y)
    But how do I turn sin(x)= to x=???
    Its been a long time since I've taken any math classes.

    Thanks

  2. #2
    geek SilentStrike's Avatar
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    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
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  3. #3
    Former Member
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    you can arcsine at both sides of the equation, and you get

    x=y

    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

    Oskilian

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