Overview: 1 questions will be solved this time.Among them
           ☆1 inequalities

[ 1/1Inequality]
    Assignment:Find the solution set of inequality 0.428 ≤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：
        0.428 ≤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)：
         -4.444751 ≤ A ≤ -3.995643 或  -3.601119 ≤ A ≤ -2.879142 或  -2.621946 ≤ A ≤ 9.204935 或  9.317394 ≤ A ≤ 10.179243 或  10.331861 ≤ A ≤ 11.141636

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    The final solution set is :
         -4.444751 ≤ A ≤ -3.995643 或  -3.601119 ≤ A ≤ -2.879142 或  -2.621946 ≤ A ≤ 9.204935 或  9.317394 ≤ A ≤ 10.179243 或  10.331861 ≤ A ≤ 11.141636
    *Note: Radian.

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