engineering mathematics MCQ #4952

The solution of cos(3x) = cos(2x) is

engineering mathematics MCQ #4952

  1. Question 1

    Q1. The solution of cos(3x) = cos(2x) is

    • A) 2nπ/5
    • B) 2nπ
    • C) nπ
    • D) 2nπ or 2nπ/5

    Answer: 2nπ or 2nπ/5

    Explanation: For cos(3x) = cos(2x), 3x = 2nπ ± 2x, giving x = 2nπ or 2nπ/5.