H
hanh246222


1.sin4x.cos16x=1
2. 2+3tanx-sin2x=0
3.2cos^3 x+cos2x+sinx=0
4. cos^3 x+sin^3 x=sinx-cosx.
2. 2+3tanx-sin2x=0
3.2cos^3 x+cos2x+sinx=0
4. cos^3 x+sin^3 x=sinx-cosx.
Last edited by a moderator: