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...............................................................................................................................................5解方法题结总..............................................................................................................................................................5角题型一：和公式的明两与差证..............................................................................................................................7角三角题型二：和的函数公式两与差......................................................................................................................9三角三角变题型：和的函数公式的形两与差逆用与............................................................................................10角题型：的分求值四利用拆....................................................................................................................................11角题型：求值五....................................................................................................................................................12题型：值求值六给....................................................................................................................................................13角题型：值求七....................................................................................................................................................13恒等角题型：正式求八切及非特殊........................................................................................................................14三角恒等变换题型：的合九用........................................................................................................................15角题型：辅助公式的十高用级应............................................................................................................................16题型一：化和、和化公式十差差....................................................................................................................1704真题·题........................................................................................................................1705本典例课·高...