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Math Help - Help with an explanation

  1. #1
    Newbie Mr. Engineer's Avatar
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    Help with an explanation

    How do you get \frac{x-xcosx}{2sinx-2xcosx}
    to be....
    \frac{1+xsinx-cosx}{2xsinx}

    any ideas?
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  2. #2
    MHF Contributor

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    I do not understand what you are asking.
    Those two expressions are not equal.
    A simple graphing utility will verify that fact.
    What are you asking?
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  3. #3
    Newbie Mr. Engineer's Avatar
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    Thanks

    Thats all I needed to know, because I thought through a process of trig formulas you could attain that 2nd form, but thank you fot telling me they are not equivalent
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  4. #4
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    Quote Originally Posted by Mr. Engineer View Post
    but thank you fot telling me they are not equivalent
    If they were the same the graph of their difference would be zero.
    Attached Thumbnails Attached Thumbnails Help with an explanation-same.gif  
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  5. #5
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    Exclamation

    Quote Originally Posted by Mr. Engineer View Post
    How do you get \frac{x-xcosx}{2sinx-2xcosx}
    to be....
    \frac{1+xsinx-cosx}{2xsinx}

    any ideas?
    I DONT KNOW CAN U EXPLAIN ME PLEASE
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