sin∧2x+sin2x/cos∧2x+cos2x
=sin∧2x+cos2x +sin2x/cos∧2x
=根号2(根号2/2*sin2X+根号2/2*cos2X)+(2sinxcosx)/cosx^2
=根号2sin(2X+45度)+2sinx/cosx
=根号2sin(2X+45度)+2tanx
不懂的欢迎追问,如有帮助请采纳,谢谢!