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Trig Fuctions help

  1. Nov 30, 2007 #1
    Trig Fuctions help!!!! plz

    hi everyone,

    my Trig text book, is really vague and I'm not sure where i could find better information.

    Basically, I'm not sure how to add, subtract, multiply, or divide trig functions. My text siad that to make a sinusoid the periods must be the same, and that the period is always 2 pi...!?! My book didn't even attempt to sauggest why--I'd really like to know what THE RULES FOR COMBINING AND TRANSFORMING TRIG FUNCTIONS ARE.

    Thankyou to anyone who can send me in the right direction.
     
  2. jcsd
  3. Nov 30, 2007 #2

    Dick

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    That's really a vague question. The rules for combining and transforming trig functions is the whole subject of 'trigonometry'. Can you be more specific?
     
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