x属于【0,2拍】,求sinx=cosx,sinx>cosx,sinx
问题描述:
x属于【0,2拍】,求sinx=cosx,sinx>cosx,sinx
答
sinx=cosx
tanx=1
x=π/4或x=5π/4
sinx>cosx
1.cosx>0
sinx/cosx>1
tanx>1
x∈(π/4,π/2]
2.cosx老师您好,能再问你道题吗?