Math Chapter Wise Ordinary And Partial Differential Equations, Integral Equations And Calculus Of Variations English MCQ PGT 2002 Q.Solution of the equation dy 1 cos2y 0 dx 1 cos2x + + = − is Atan y+cot x= c Btan y –cot x= c Ccot x + tan y = c Dnone of these Show answer Correct answer: tan y –cot x= c