求证:tanxsinx/(tanx-sinx)=(tanx+sinx)/(tanxsinx)
问题描述：
求证:tanxsinx/(tanx-sinx)=(tanx+sinx)/(tanxsinx)
答
两边同时乘以(tan（x）sin（x）)/(tan（x）+sin（x）),可得原命题即证明 tan(x)tan(x)sin(x)sin(x)/( tan(x)tan(x)-sin(x)sin(x))=1 tan(x)tan(x)sin(x)sin(x)/( tan(x)tan(x)-sin(x)sin(x))分子分母同时除以 sin（x...