3、在[0,2π]上满足cosx≥1/2的x的取值范围是( )求详解,
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![3、在[0,2π]上满足cosx≥1/2的x的取值范围是( )求详解,](/uploads/image/z/5119372-28-2.jpg?t=3%E3%80%81%E5%9C%A8%5B0%2C2%CF%80%5D%E4%B8%8A%E6%BB%A1%E8%B6%B3cosx%E2%89%A51%2F2%E7%9A%84x%E7%9A%84%E5%8F%96%E5%80%BC%E8%8C%83%E5%9B%B4%E6%98%AF%EF%BC%88+%EF%BC%89%E6%B1%82%E8%AF%A6%E8%A7%A3%2C)
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3、在[0,2π]上满足cosx≥1/2的x的取值范围是( )求详解,
3、在[0,2π]上满足cosx≥1/2的x的取值范围是( )求详解,
3、在[0,2π]上满足cosx≥1/2的x的取值范围是( )求详解,
cosx≥1/2
∴ 2kπ-π/3≤x≤2kπ+π/3
结合条件
∴ 【0,π/3】U【5π/3,2π】