Question 889606
You asked for help on this:  Tan(x)-sin(x).cos(x) / sin^2 (x) = tan(x)

which looks like this as rendered:  {{{Tan(x)-sin(x)cos(x)/sin^2(x)=tan(x)}}}.
The dot needed to be removed because it will not allow rendering.



Working with exactly that:


{{{tan(x)-sin(x)cos(x)/(sin(x)sin(x))}}}
{{{tan(x)-cross(sin(x))cos(x)/(cross(sin(x))sin(x))}}}
{{{tan(x)-cos(x)/sin(x)}}}
{{{tan(x)-cot(x)}}}


{{{tan(x)-cot(x)<>tan(x)}}}


The equation you asked is NOT an identity.