engineering mathematics MCQ #5543

Simplify: cos(2x) + sin²(x)

engineering mathematics MCQ #5543

  1. Question 1

    Q1. Simplify: cos(2x) + sin²(x)

    • A) cos²(x)
    • B) sin²(x)
    • C) 1 - sin²(x)
    • D) 1

    Answer: cos²(x)

    Explanation: Using cos(2x) = cos²(x) - sin²(x), we simplify to cos²(x).