练习册

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    知识体系 三角函数部分······························································37 题型体系 三角函数部分······························································45 题型一 三角函数的概念······························································45 题型二 同角三角函数的关系与诱导公式················································49 题型三 两角和与差.二倍角公式······················································54 题型四 三角函数的图像······························································59 题型五 三角函数的性质(一) 定义域.值域.周期··········································· 65 题型六 三角函数的性质(二) 偶性性.单调性············································70 知识体系 解三角形部分·······························································77 题型体系 解三角形部分······························································77 题型一 解三角形····································································79 题型二 解三角形综合································································81 题型三 解三角形应用································································83 【查看更多】

     

    题目列表(包括答案和解析)

    1、设全集为U，用集合A、B的交集、并集、补集分别表示如图韦恩图中Ⅰ、Ⅱ、Ⅲ、Ⅳ四个部分为：Ⅰ部分：A∩B，Ⅱ部分：A∩CUB，Ⅲ部分：B∩CU（A∩B），Ⅳ部分：CU（A∩B），其中表示错误的是（　　）

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    设全集为U，用集合A、B的交集、并集、补集分别表示右边韦恩图中Ⅰ、Ⅱ、Ⅲ、Ⅳ四个部分为：Ⅰ部分：A∩B，Ⅱ部分：A∩CUB，Ⅲ部分：B∩CU（A∩B），Ⅳ部分：（CUA）∪（CUB），其中表示错误的是（　　）

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    若三个平面两两相交，且三条交线互相平行，则这三个平面把空间分成(　　)

    A．5部分　　                       B．6部分　　

    C．7部分　　                       D．8部分

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    若三个平面两两相交，且三条交线互相平行，则这三个平面把空间分成(　　)

    A．5部分　　                       B．6部分　　

    C．7部分　　                       D．8部分

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    　　判断下列三角函数值的符号:

    　　(1)sin(-670º)；(2)tan；(3)cos4.

     

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