因0≤y≤xtan(x-y)=(tanx-tany)/(1+tanxtany)=2tany/((1+3tan²y)=2/[(1/tany)+3tany]
...
设tanx=3tany(0
4个回答
相关问题
-
高手进tanx+tany/tanx-tany=3/2 求tanx/tany?
-
如果实数x、y满足|tanx|+|tany|＞|tanx+tany|，且y∈(π，3π2)，则|tanx-tany|等于
-
如果实数x、y满足|tanx|+|tany|＞|tanx+tany|，且y∈(π，3π2)，则|tanx-tany|等于
-
证明 (tanX+tanY)/(tanX-tanY)=(sin(X+Y))/(sin(X-Y))
-
求证tanx+tany/tanx-tany=sin(x+y）/sin(x-y)
-
tanx=1/2,x=?tany=1/3,y=?
-
tan(x+y)=tanx+tany吗
-
已知0＜x,y＜π/2,tanx＝3tany.求证x-y≤π/6
-
x+y=3π/4,则(1-tanx)(1-tany)
-
已知tanx=1/7 ,tany=1/3则sinx =