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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality (410940000÷502654.82÷400) ≤2×14.3×sin(3.14a)×sin(3.14a)×sin(3.14a)÷3÷3.14+14.3×a{1-sin(2×3.14a)÷(2×3.14a)}×{sin(3.14a)+sin(1.25×3.14-2a×3.14)÷(1.25-2a400÷0.25 ) ) .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         ( 410940000 ÷ 502654.82 ÷ 400 ) ≤2 × 14.3 × sin ( 3.14 * a ) × sin ( 3.14 * a ) × sin ( 3.14 * a ) ÷ 3 ÷ 3.14 + 14.3 × a * ( 1 - sin ( 2 × 3.14 * a ) ÷ ( 2 × 3.14 * a ) ) × ( sin ( 3.14 * a ) + sin ( 1.25 × 3.14 - 2 * a × 3.14 ) ÷ ( 1.25 - 2 * a * 400 ÷ 0.25 ) )         (1)

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    From inequality(1)：
         a ≤ -4.013387 或  -2.98637 ≤ a ≤ -2.023753 或  -0.954676 ≤ a ≤ -0.422191 或  0.252385 ≤ a ≤ 0.955116 或  2.023739 ≤ a ≤ 2.986379 或  a ≥ 4.013388

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    The final solution set is :
         a ≤ -4.013387 或  -2.98637 ≤ a ≤ -2.023753 或  -0.954676 ≤ a ≤ -0.422191 或  0.252385 ≤ a ≤ 0.955116 或  2.023739 ≤ a ≤ 2.986379 或  a ≥ 4.013388
    *Note: Radian.

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