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Math Help - Math problem 2

  1. #1
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    Exclamation Math problem 2

    This is another part of my book that is hard:

    Decide the angle x between pi/2 and pi so that sin x= sin pi/14

    Later the book say that the answer is in this form:

    x= a pi/b where a/b is a simplified fraction.

    I hope everyone understand! Please, don't just say the answer to me i want to understand how I do it
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  2. #2
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    Re: Math problem 2

    Math problem 2-sine.png
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  3. #3
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    Re: Math problem 2

    Quote Originally Posted by MathChick View Post
    This is another part of my book that is hard:

    Decide the angle x between pi/2 and pi so that sin x= sin pi/14

    Later the book say that the answer is in this form:

    x= a pi/b where a/b is a simplified fraction.

    I hope everyone understand! Please, don't just say the answer to me i want to understand how I do it
    I think you can directly compare the sin values so x=pi/14, then a/b=1/14
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  4. #4
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    Re: Math problem 2

    The angle $\pi/14$ is not between $\pi/2$ and $\pi$, as the problem requires.
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