How can I solve..
cotx + cosx sinx/ tanx +conx sinx/ cotx = csc2?

Please clarify. Without proper grouping symbols your problem statement is rather ambiguous.

Is this what you mean?:

\frac{cotx+cosxsinx}{tanx}+\frac{cosxsinx}{cotx}=c sc(2)

Do you mean:


cot(x) + \frac {cos(x) sin(x)}{tan(x)}+ \frac{cos(x) sin(x)}{cot(x)} = csc(2)


If so, then try rewriting using sin() and cos() in place of the tan() and cot() functons, and much of it collapses to a simpler looking equation. You'll end up having to determine the arc tan of a number.