Overview: 2 questions will be solved this time.Among them
           ☆2 inequalities

[ 1/2Inequality]
    Assignment:Find the solution set of inequality 2/5 <= 26295227247788973/22517998136852480-sin(alpha)/2 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        2 / 5 <= 26295227247788973 / 22517998136852480 - sin ( alpha ) / 2         (1)

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    From inequality(1)：
         alpha ∈ R (R is all real numbers),that is, in the real number range, the inequality is always established!

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    The final solution set is :
         alpha ∈ R (R is all real numbers),that is, in the real number range, the inequality is always established!
    *Note: Radian.
[ 2/2Inequality]
    Assignment:Find the solution set of inequality 3/10 <= sin(alpha)/2-5229670409655129/90071992547409920 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        3 / 10 <= sin ( alpha ) / 2 - 5229670409655129 / 90071992547409920         (1)

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    From inequality(1)：
         alpha ≤ -16.506194 或  -11.76814 ≤ alpha ≤ -10.223008 或  -5.484955 ≤ alpha ≤ -3.939823 或  0.79823 ≤ alpha ≤ 2.343362 或  7.081416 ≤ alpha ≤ 8.626548 或  alpha ≥ 13.364601

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    The final solution set is :
         alpha ≤ -16.506194 或  -11.76814 ≤ alpha ≤ -10.223008 或  -5.484955 ≤ alpha ≤ -3.939823 或  0.79823 ≤ alpha ≤ 2.343362 或  7.081416 ≤ alpha ≤ 8.626548 或  alpha ≥ 13.364601
    *Note: Radian.

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