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           ☆1 inequalities

[ 1/1Inequality]
    Assignment:Find the solution set of inequality 0.342 ≤0.6667×sin(3.14×A)+A×[1-(sin（6.28×A）÷(6.28×A）)]×0.875+4 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        0.342 ≤0.6667 × sin ( 3.14 × A ) + A × ( 1 - ( sin ( 6.28 × A ) ÷ ( 6.28 × A ) ) ) × 0.875 + 4         (1)

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    From inequality(1)：
         A ≥ -4.076214

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    The final solution set is :
         A ≥ -4.076214
    *Note: Radian.

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