化简:(1)根三sinx+cosx (2)sinx-cosx (3)3sinx+4cosx (4)根二sin(π/4-x)化简:(1)根三sinx+cosx (2)sinx-cosx (3)3sinx+4cosx (4)根二sin(π/4-x)

来源:学生作业帮助网 编辑:作业帮 时间:2024/05/07 07:49:31
化简:(1)根三sinx+cosx (2)sinx-cosx (3)3sinx+4cosx (4)根二sin(π/4-x)化简:(1)根三sinx+cosx (2)sinx-cosx (3)3sinx+4cosx (4)根二sin(π/4-x)

化简:(1)根三sinx+cosx (2)sinx-cosx (3)3sinx+4cosx (4)根二sin(π/4-x)化简:(1)根三sinx+cosx (2)sinx-cosx (3)3sinx+4cosx (4)根二sin(π/4-x)
化简:(1)根三sinx+cosx (2)sinx-cosx (3)3sinx+4cosx (4)根二sin(π/4-x)
化简:(1)根三sinx+cosx (2)sinx-cosx (3)3sinx+4cosx (4)根二sin(π/4-x)

化简:(1)根三sinx+cosx (2)sinx-cosx (3)3sinx+4cosx (4)根二sin(π/4-x)化简:(1)根三sinx+cosx (2)sinx-cosx (3)3sinx+4cosx (4)根二sin(π/4-x)
1)2sin(x+π/6)
2)根号2sin(x-π/4)
3)5sin(x+arccos3/5)
4)1/2(cosx-sinx)

=2(根号3/2 sinx + 1/2 cosx)
=2(cosPi/6 sinx + sin Pi/6 cosx)
= 2 sin(Pi/6 +x )
其它都类似