engineering mathematics MCQ #4927

The general solution of cos(3x) = 1/2 is

engineering mathematics MCQ #4927

  1. Question 1

    Q1. The general solution of cos(3x) = 1/2 is

    • A) 2nπ/3 ± 2π/9
    • B) 2nπ ± π/9
    • C) nπ/3 + (-1)^n * π/9
    • D) 2nπ/3 ± π/9

    Answer: 2nπ/3 ± 2π/9

    Explanation: First, isolate cos(3x), then use the general solution for cos(x) = cos(α).