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    rmacgilvary's Avatar
    rmacgilvary Posts: 3, Reputation: 1
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    #1

    Apr 17, 2013, 08:49 AM
    verify the identity? Csc^2(u) - cos(u)sec(u) = cot^2(u)
    csc^2(u) - cos(u)sec(u) = cot^2(u)
    ebaines's Avatar
    ebaines Posts: 12,131, Reputation: 1307
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    #2

    Apr 17, 2013, 09:25 AM
    Use the same process as I described in repsonse to your other post: https://www.askmehelpdesk.com/mathem...ty-744696.html
    rmacgilvary's Avatar
    rmacgilvary Posts: 3, Reputation: 1
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    #3

    Apr 17, 2013, 09:25 AM
    Figured it out :)

    csc^2x = 1 + cot^2x

    and since -cosxsecx = -1

    1 + cot^2x - 1 = cot^2x

    Identity verified :)
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