engineering mathematics MCQ #5528

What is the value of sin(15°)?

engineering mathematics MCQ #5528

  1. Question 1

    Q1. What is the value of sin(15°)?

    • A) (√6 + √2)/4
    • B) (√6 - √2)/4
    • C) (√3 + 1)/2√2
    • D) (√3 - 1)/2√2

    Answer: (√6 - √2)/4

    Explanation: Using sin(A - B) = sin(A)cos(B) - cos(A)sin(B), sin(15°) = sin(45° - 30°) = sin(45°)cos(30°) - cos(45°)sin(30°) = (√2/2)(√3/2) - (√2/2)(1/2) = (√6 - √2)/4.