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Trig Help???

Discussion in 'BBS Hangout' started by Lil Pun, Oct 3, 2002.

  1. Lil Pun

    Lil Pun Member

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    Can anybody do this trig problem?
    You're supposed to make one side equal another. Sorry but I am taking PreCalculus this semester and I don't get this problem.




    This is the first side:

    1 + sin x - 2
    ___
    sin x

    _____________________________

    - 1 + sin x
    ___
    sin x




    This is the second side


    sin x -1
    _______

    sin x +1
     
    #1 Lil Pun, Oct 3, 2002
    Last edited: Oct 3, 2002
  2. Sonny

    Sonny Member

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    Aren't there some formulas that you can use to simplify?

    sorry I can't be of more help, I took Pre-Cal 4 or 5 yrs ago.
     
  3. No Worries

    No Worries Member

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    Multiply the first side by sin x / six x (ie multiply by 1).

    This yields:

    sin2 x - 2sin x + 1
    -------------------
    sin2 x - 1


    Next you need to factorize

    (sin x - 1)(sin x - 1)
    ----------------------
    (sin x + 1)(sin x - 1)


    This then reduces to the second side. I took trig in 1976, so I hope I got it right :rolleyes:
     
  4. Mudbug

    Mudbug Member

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    Yes, you're right. Of course sin2 x = (sin x)(sin x)
     
    #4 Mudbug, Oct 3, 2002
    Last edited: Oct 3, 2002

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