engineering mathematics MCQ #273

If sin(θ) = 1/2, then find the value of cos(2θ).

engineering mathematics MCQ #273

  1. Question 1

    Q1. If sin(θ) = 1/2, then find the value of cos(2θ).

    • A) 1/2
    • B) 1/4
    • C) -1/2
    • D) 0

    Answer: 1/2

    Explanation: Using the double angle formula, cos(2θ) = 1 - 2sin²(θ) = 1 - 2(1/2)² = 1/2.