作业帮(1+sin2x)/cos2x=tan(π/4+x)
来源：学生作业帮助网 编辑：作业帮 时间：2024/11/25 17:47:09
x)0.3O/6-I8ߠo]iTW^Άdbц@Q6Pf>P HTPHMZDS? d8H? )BI$ف ;S_
(1+sin2x)/cos2x=tan(π/4+x)
(1+sin2x)/cos2x=tan(π/4+x)
(1+sin2x)/cos2x=tan(π/4+x)
(1+sin2x)/cos2x
=[1-cos(2x+π/2)]/sin(π/2+2x)
=2sin²(x+π/4)/[2sin(π/4+x)cos(π/4+x)]
=sin(x+π/4)/cos(x+π/4)
=tan(π/4+x)