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Math Help - Trig graphing

  1. #1
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    Smile Trig graphing

    Can someone tell me how i would sketch these graph equations???

    1) Draw the graph of y= 6cos (4theta+2) for 0<theta<2pi
    (where no units are included units are in radians)

    2) For the graph of y= 120cos (6theta-45degrees)
    What is:
    a) The amplitude?
    b) The period?
    c) The phase shift?
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  2. #2
    Junior Member
    Joined
    Nov 2009
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    Quote Originally Posted by GAVREED2 View Post
    Can someone tell me how i would sketch these graph equations???

    1) Draw the graph of y= 6cos (4theta+2) for 0<theta<2pi
    (where no units are included units are in radians)

    2) For the graph of y= 120cos (6theta-45degrees)
    What is:
    a) The amplitude?
    b) The period?
    c) The phase shift?
    Sketch the graph from general equation:
    y=A sin (B\theta +C) +D

    A is represented the amplitude of the graph (max-min value)
    B: period (period= \frac{2\pi}{B})
    C: horizontal tanslation through C unit (if the value of C is (+) the graph move to the left side and vice versa)
    D:vertical tanslation through D unit (if the value of D is (+) the graph move to up side and vice versa)

    ===hope it'll help===
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