高中数学课件第一章章末复习方案与全优评估

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1、章末复习方案与全优评估要点整合再现第一章三角函数阶段质量检测高频考点例析考点三考点一考点二考点四考点五Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile5.2.0.0.Copyright2004-2011AsposePtyLtd.Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile5.2.0.0.Copyright2004-2011AsposePtyLtd.Evaluationonly.CreatedwithAs

2、pose.Slidesfor.NET3.5ClientProfile5.2.0.0.Copyright2004-2011AsposePtyLtd.Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile5.2.0.0.Copyright2004-2011AsposePtyLtd.Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile5.2.0.0.Copyright2004-2011AsposePtyLtd.Evalua

3、tiononly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile5.2.0.0.Copyright2004-2011AsposePtyLtd.Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile5.2.0.0.Copyright2004-2011AsposePtyLtd.(3)基本关系式的常见变形：①(sinα＋cosα)2－2sinαcosα＝1.②(sinα－cosα)2＋2sinαcosα＝1.③sinα＝tanαcosα.④1－s

4、in2α＝cos2α，1－cos2α＝sin2α.Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile5.2.0.0.Copyright2004-2011AsposePtyLtd.Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile5.2.0.0.Copyright2004-2011AsposePtyLtd.(3)对称变换：对于函数y＝f(x)的图像，①关于x轴对称后，图像对应的解析式为y＝－f(x)．②关于y轴对

5、称后，图像对应的解析式为y＝f(－x)．③关于原点对称后，图像对应的解析式为y＝－f(－x)．Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile5.2.0.0.Copyright2004-2011AsposePtyLtd.4．y＝Asin(ωx＋φ)的图像与性质(1)作法：五点法作图，或图像变换法．(2)性质：Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile5.2.0.0.Copyright2004-2011

6、AsposePtyLtd.Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile5.2.0.0.Copyright2004-2011AsposePtyLtd.5．三角函数式的值域与最值求三角函数式的值域与最值有以下两种类型：(1)将所求三角函数式变形为y＝Asin(ωx＋φ)＋b的形式，然后结合角x的取值范围来求解；(2)将所求三角函数式变形为关于sinx(或cosx)的二次函数的形式，用配方法求解．无论哪种类型都要利用正弦函数、余弦函数的有界性．Evaluationonly.Creat

7、edwithAspose.Slidesfor.NET3.5ClientProfile5.2.0.0.Copyright2004-2011AsposePtyLtd.Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile5.2.0.0.Copyright2004-2011AsposePtyLtd.[答案]－8Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile5.2.0.0.Copyright2004-2011Aspos

8、ePtyLtd.[借题发挥]掌握任意角的正弦、余弦、正切的定义是解