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    Kendra22's Avatar
    Kendra22 Posts: 11, Reputation: 1
    New Member
    		  
    #1

    May 16, 2009, 06:47 PM
    Trigonometry Expressions
    Which expression is equivalent to cos^2x +cot^2x +sin^2x?

    a) 2 csc^2x
    b) tan^2x
    c) cot^2x
    d) csc^2x
    Unknown008's Avatar
    Unknown008 Posts: 8,076, Reputation: 723
    Uber Member
    		  
    #2

    May 16, 2009, 11:53 PM

    See the in your ?

    That equals to 1

    Then,

    You should know that
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