engineering mathematics MCQ #5556

What is the value of sin(x + π/2)?

engineering mathematics MCQ #5556

  1. Question 1

    Q1. What is the value of sin(x + π/2)?

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

    Answer: cos(x)

    Explanation: Using the sum formula for sine, sin(x + π/2) = sin(x)cos(π/2) + cos(x)sin(π/2) = cos(x), as cos(π/2) = 0 and sin(π/2) = 1.