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    TLISTIECI's Avatar
    TLISTIECI Posts: 1, Reputation: 1
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    #1

    May 23, 2009, 07:00 PM
    Solve the Trig proof below
    ((1+tan(x))/(sin(x)))-sec(x)=csc(x)
    Perito's Avatar
    Perito Posts: 3,139, Reputation: 150
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    #2

    May 23, 2009, 07:37 PM
    ((1+tan(x))/(sin(x)))-sec(x)=csc(x)
    ((1+tan(x))/(sin(x)))-sec(x)=csc(x)











    QED
    teshii18's Avatar
    teshii18 Posts: 1, Reputation: 1
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    #3

    Jan 24, 2010, 03:55 PM

    The earth revolves on its axis once every 24 hours.Assumming the earth's radius is 6400 km, find the:

    a.angular velocity of the earth in radians/day

    b.angular velocity of the earth in
    Radians/hour

    c.linear velocity of a city located on the equator in km/hour
    Unknown008's Avatar
    Unknown008 Posts: 8,076, Reputation: 723
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    #4

    Jan 25, 2010, 07:43 AM

    teshii18, you should have started your own thread.

    a. Angular Velocity = Total angle covered/Time to cover angle

    b. Just convert 1 radian/day = 1 radian/24 hours = 0.04166 rad/hour

    c. Linear Velocity = Length of arc/Time to cover that length.

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