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Math Help - trig graphing

  1. #1
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    Palmy
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    Question trig graphing

    Please solve this question!!! cheers

    For the graph y= 6cos (4theta+2) for 0<theta<2pi

    What is the Phase shift????
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  2. #2
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     6\cos (4\theta+2)= 6\cos 4\left(\theta+\frac{1}{2}\right)<br />
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  3. #3
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    Exclamation Last question i can't get.

    Thanks Pickslides for helping understand these questions.

    The last one i need answered is really hard i don't understand it, hope you can help.

    Question 1

    a) State the amplitude (A) the period (T) and the frequency (F) for the periodic function - 120sin(100 pi t)V.

    b) Through how many degrees does a wheel rotate in 10 ms if its angular velocity is 8 rad/s.

    c) Sketch one cycle of the given function showing the values of each variable where the curve crosses the axis. V=50sin(4.2*10^2t)
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