小学、初中、高中各种试卷真题知识归纳文案合同PPT等免费下载www.doc985.com第02讲三角恒等变换目录01考情透视·目航标导..........................................................................................................................202知识导图·思引航维..........................................................................................................................303考点突破·型探究题..........................................................................................................................4知点识1角：两和与差的正余弦与正切...................................................................................................................4知点识2角：二倍公式...............................................................................................................................................4知点识3：降次（）公式.......................................................................................................................................5知点识4角：半公式...................................................................................................................................................5知点识4角：助公式...............................................................................................................................................6解方法题结总..............................................................................................................................................................7角题型一：和公式的明两与差证..............................................................................................................................8角三角题型二：和的函数公式两与差....................................................................................................................12三角三角变题型：和的函数公式的形两与差逆用与............................................................................................14角题型：的分求值四利用拆....................................................................................................................................16角题型：求值五....................................................................................................................................................18题型：值求值六给....................................................................................................................................................20角题型：值求七....................................................................................................................................................23恒等角题型：正式求八切及非特殊........................................................................................................................26三角恒等变换题型：的合九用........................................................................................................................28角题型：辅助公式的十高用级应............................................................................................................................30题型一：化和、和化公式十差差....................................................................................................................3304真题·题........................................................................................................................3505本典例课·高...