SubArea: Trigonometric equations and inequalitiesLevel: AProject ID: 2010010702Source Problem: 1003085602Accepted: 0Clonable: 1Easy: 1The solution set of the equation cotgx=3 for x∈(−π;π) is:{−5π6;π6}{−π6;π6}{−π3;π3}{−2π3;π3}