1/8cos^x+2sinx−7=0;
2/2tan^x+3tanx+1=0;
3/tanx−2cotx+1=0
4/2sin^x+sinxcosx−3cos^x=0
5/3sin^x-4sinxcosx+5cos^x=2
6/sin^x+sin2x-2cos^x = 1/2
7/2cos^x + sin2x- 3 căn 3sin2x-4sin^x= -4
Loga
Sinh Học lớp 12
