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    NISHI10's Avatar
    NISHI10 Posts: 10, Reputation: 1
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    #1

    Apr 18, 2013, 08:25 PM
    Trigonometric indentities
    Please verify this identity,2cos ^2x+2 root over 2sinx=3
    NISHI10's Avatar
    NISHI10 Posts: 10, Reputation: 1
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    #2

    Apr 18, 2013, 08:32 PM
    Trigonometric equations
    Please verify this equation,4sin^2x-(2+2 root over 3)sinx-root over 3=0
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    ebaines Posts: 12,131, Reputation: 1307
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    #3

    Apr 19, 2013, 01:15 PM
    It's very difficult trying to understand what you're asking - what does "root over 3" mean? I think you may mean this:



    but if so then the identity is incorrect.
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