Chuyªn ®Ò :ph¬ng tr×nh lîng gi¸c
20/ 2tanx+cot2x=2sin2x+ 21/cosx(cos4x+2)+ cos2x-cos3x=0 . 22/ 1+tanx=sinx+cosx 23/ (1-tanx)(1+sin2x)=1+tanx . 24/ 2= 25/ 2tanx+cotx= 26/ cotx-tanx=cosx+sinx 27/ 9sinx+6cosx-3sin2x+cos2x=8 . DANG 8 : Phương trình LG phải thực hiện công thúc nhân đôi, hạ bậc . cos2x= cos2x- sin2x =2cos2x-1=1-2sin2x ... ................
................
In order to avoid copyright disputes, this page is only a partial summary.
To fulfill the demand for quickly locating and searching documents.
It is intelligent file search solution for home and business.