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Math Help - Show me how to reduce into a single term

  1. #1
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    Show me how to reduce into a single term

    tan (x+y) - tan y
    ---------------------
    1+ tan(x+y) tan y


    Thanks!
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  2. #2
    Super Member bigwave's Avatar
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    Quote Originally Posted by KarlosK View Post
    tan (x+y) - tan y
    ---------------------
    1+ tan(x+y) tan y


    Thanks!
    do you know the difference formula for tan(x - y)

    from the formula given just reverse back to this..
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  3. #3
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    Very vaguely. I am taking an online course and it is difficult to learn without a book. Sometimes seeing it written out helps me to understand. Otherwise I have to scour the internet looking at examples and piecing things together. Last time I ever take an online class that is for sure
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  4. #4
    Super Member bigwave's Avatar
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    Quote Originally Posted by KarlosK View Post
    Very vaguely. I am taking an online course and it is difficult to learn without a book. Sometimes seeing it written out helps me to understand. Otherwise I have to scour the internet looking at examples and piecing things together. Last time I ever take an online class that is for sure
     tan(U-V) = \frac{tanU - tanV}{1 + tanUtanV}

    if you look at it closely it is similiar to the to the given formula

    so that the U value is (X+Y) and the V value is Y

    so then tan(U-V) is  tan((X+Y) - Y)

    or just  tan(X)

    I have taken distance learning also, but with forums like this you get lots of help some times better than a class room
    Last edited by bigwave; December 4th 2009 at 04:41 PM. Reason: cosmetics
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