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Homework Help: Quick math quesiton

  1. Feb 12, 2005 #1
    tan(theta) + tan(theta) is equal to tan(2theta) right? just want to make sure
     
  2. jcsd
  3. Feb 12, 2005 #2

    learningphysics

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    No. tan(theta) + tan(theta) is just 2tan(theta).

    tan(2theta)=2tan(theta)/(1-tan^2(theta))
     
  4. Feb 12, 2005 #3
    NO....
    [tex]tan \theta + tan \theta = 2 tan \theta = tan 2 \theta ( 1-tan^2 \theta) [/tex]
     
  5. Feb 12, 2005 #4
    yea first i thought that tan(theta) + tan(theta) was 2tan(theta), but it didnt make sense for some reason cause it's 2*tan(theta), if you did a integral, can you take out the 2? to look like [tex]2\int tan(theta)[/tex]

    maybe i'm thinking too much, cause it's really really late right now, well i'm going to get some sleep. thanks for the help
     
    Last edited: Feb 12, 2005
  6. Feb 12, 2005 #5
    Yes and what you have is 1*tan (theta) + 1*tan (theta).

    An integral. Yes you can take the 2 out. You missed the d(theta) as well :smile:.
     
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