The solution of the differential equation cos y log (sec x + tan x) dx = cos x log (sec y…

Mathematics · JEE Main · NTA ExamsDifferential Equations

The solution of the differential equation
cos y log (sec x + tan x) dx =
cos x log (sec y + tan y ) dy is
  1. sec2 x + sec2 y = c
  2. sec x + sec y = c
  3. sec x – sec y = c
  4. None of these

Answer

(D) None of these

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