Let f(x)=limy→0 (1−cos(xy))tan(xy)y3f(x)=\lim\limits_{y \to 0}\;\dfrac{(1-\cos(xy))\tan(xy)}{y^3}f(x)=y→0limy3(1−cos(xy))tan(xy). Then the number of solutions of the equation f(x)=sinxf(x)=\sin xf(x)=sinx, x∈Rx \in Rx∈R is :
0
2
3
1