engineering mathematics MCQ #5574

The value of cos(π / 2 + x) is

engineering mathematics MCQ #5574

  1. Question 1

    Q1. The value of cos(π / 2 + x) is

    • A) sin(x)
    • B) -sin(x)
    • C) cos(x)
    • D) -cos(x)

    Answer: -sin(x)

    Explanation: Using the cosine sum identity, cos(π / 2 + x) = -sin(x).