engineering mathematics MCQ #5573

If cos(x) = 1 / 2, what is sin(2x)?

engineering mathematics MCQ #5573

  1. Question 1

    Q1. If cos(x) = 1 / 2, what is sin(2x)?

    • A) √3 / 2
    • B) 1 / 2
    • C) -√3 / 2
    • D) 1

    Answer: √3 / 2

    Explanation: Using sin(2x) = 2sin(x)cos(x) and sin(x) = √3 / 2, we find sin(2x) = √3 / 2.