YX010AAXBBAOBCDsinxcosxXsinx=BAcosx=0Bsinxcosx-34x40X80%20%1sin22;2cos12;3cossin.++（1）02sin4=sin34=220A0B434sin22ABsin224+2k34+2kkZ;（2）02cos3=cos53=1202sin4=sin34=22sin22