Math Chapter Wise Trigonometrical Identities And Circular Function English MCQ Haryana PGT 2019 Q.If y = cos2 x – 6sinxcosx + 3sin2 x + 2, then for real x: A4 10 y 4 10/− ≤ + B2 10 y 2 10/− ≤ + C3 5 y 4 5/− ≤ + DNone of these Show answer Correct answer: 4 10 y 4 10/− ≤ +