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           ☆1 inequalities

[ 1/1Inequality]
    Assignment:Find the solution set of inequality 4900 >((64.95sin3x-10)/tan30-21.65+21.65cos3x)^2+100 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        4900 > ( ( 64.95 * sin 3 * x - 10 ) / tan 30 - 21.65 + 21.65 * cos 3 * x ) ^ 2 + 100         (1)

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    From inequality(1)：
         -3.908751 < x < 2.151531

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    The final solution set is :
         -3.908751 < x < 2.151531
    *Note: Radian.

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