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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality -sinx ≥0 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        -sin x ≥0         (1)

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    From inequality(1)：
         -15.707963 ≤ x ≤ -12.566371 或  -9.424778 ≤ x ≤ -6.283185 或  -3.141593 ≤ x ≤ 0 或  3.141593 ≤ x ≤ 6.283185 或  9.424778 ≤ x ≤ 12.566371

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    The final solution set is :
         -15.707963 ≤ x ≤ -12.566371 或  -9.424778 ≤ x ≤ -6.283185 或  -3.141593 ≤ x ≤ 0 或  3.141593 ≤ x ≤ 6.283185 或  9.424778 ≤ x ≤ 12.566371
    *Note: Radian.

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