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Math Help - tan

  1. #1
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    tan

    so if we have cot 0/tan0 +1 what do we end up with,

    i know that cot = 1/tan so i get 1/tan / tan +1which ends up as 1/ tan ^2 + 1 but where do i go from there???
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  2. #2
    MHF Contributor Amer's Avatar
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    Quote Originally Posted by netbook View Post
    so if we have cot 0/tan0 +1 what do we end up with,

    i know that cot = 1/tan so i get 1/tan / tan +1which ends up as 1/ tan ^2 + 1 but where do i go from there???
    what is the question ? write the complete question you want to simplify or find solution of an equation or what ??
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  3. #3
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    Please learn to write clearly. Do NOT write things that you KNOW to be incorrect and expect everyone to figure out what you mean.

    1) Why on Earth would you choose a zero (0) te represent \theta? Never do that.

    2) Remember your Order of Operations. 8 / 3 + 2 is NOT the same as 8 / (3+2).

    You have \frac{\cot(\theta)}{tan(\theta)+1}. It is a small matter to use parenthese and some substitution to clarify meaning. Notice that it doesnt matter if we use theta. cot(a) / (tan(a) + 1).

    Finally, remember this: \cos^{2}(x) + \sin^{2}(x) = 1? What happens if you divide that familiar identity by \cos^{2}(x)
    Last edited by TKHunny; August 20th 2009 at 05:19 PM.
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  4. #4
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    You are of course correct, I should not expect you to understand my notes, let me clear up the question, I need the value of

    \frac{\cot (a)}{\tan (a)} + 1 =

    I believe this is equal to an integer, 1 or maybe 0.

    Thanks for you patience.

    Netbook
    Last edited by mr fantastic; August 20th 2009 at 12:25 AM. Reason: Re-wrote the expression using latex (it's not hard to learn, by the way!)
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  5. #5
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    Quote Originally Posted by netbook View Post
    You are of course correct, I should not expect you to understand my notes, let me clear up the question, I need the value of

    \frac{\cot (a)}{\tan (a)} + 1 =

    I believe this is equal to an integer, 1 or maybe 0.

    Thanks for you patience.

    Netbook
    Substitute \cot a = \frac{\cos a }{\sin a} and \tan a = \frac{\sin a }{\cos a} and simplify to get \frac{\cos^2 a}{\sin^2 a} + 1. Now get both terms under a common denominator and use a well known identity.
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