engineering mathematics MCQ #95

If sin(A) = 1/2, find cos(A).

engineering mathematics MCQ #95

  1. Question 1

    Q1. If sin(A) = 1/2, find cos(A).

    • A) √3/2
    • B) 1/√2
    • C) 1/2
    • D) 0

    Answer: √3/2

    Explanation: Using Pythagorean identity: sin²(A) + cos²(A) = 1, so cos(A) = √(1 - (1/2)²) = √3/2.