sin²x+2sinx+cosx+3cos²x化简

来源：学生作业帮助网编辑：六六作业网时间：2024/05/20 03:12:51

sin²x+2sinx+cosx+3cos²x化简sin²x+2sinx+cosx+3cos²x化简sin²x+2sinx+cosx+3cos

sin²x+2sinx+cosx+3cos²x化简
sin²x+2sinx+cosx+3cos²x化简

sin²x+2sinx+cosx+3cos²x化简
sin²x+2sinx*cosx+3cos²x
=1+2sinxcosx+2cos²x
=sin2x+cos2x+2
=√sin(2x+π/4)+2