engineering mathematics MCQ #5569

The value of sin(x + π / 2) is

engineering mathematics MCQ #5569

  1. Question 1

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

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

    Answer: cos(x)

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