engineering mathematics MCQ #5559

If sin(x) + sin(y) = 1 and cos(x) + cos(y) = 1, then what is the value of sin(x + y)?

engineering mathematics MCQ #5559

  1. Question 1

    Q1. If sin(x) + sin(y) = 1 and cos(x) + cos(y) = 1, then what is the value of sin(x + y)?

    • A) 1
    • B) 0
    • C) 1/2
    • D) -1/2

    Answer: 1

    Explanation: For n equal coplanar forces in equilibrium, adjacent forces are separated by 360°/n, which is 2π/n radians.