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

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

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    From inequality(1)：
         -14.922565 < x < -11.780972 或  -8.63938 < x < -5.497787 或  -2.356194 < x < 0.785398 或  3.926991 < x < 7.068583 或  10.210176 < x < 13.351769

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    The final solution set is :
         -14.922565 < x < -11.780972 或  -8.63938 < x < -5.497787 或  -2.356194 < x < 0.785398 或  3.926991 < x < 7.068583 或  10.210176 < x < 13.351769
    *Note: Radian.

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