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    Question

    What is the value of sin(B – C) cos(A – D) + sin(A

    – B) cos(C – D) + sin(C – A) cos(B – D)?
    A 3/2 Correct Answer Incorrect Answer
    B 1 Correct Answer Incorrect Answer
    D -3 Correct Answer Incorrect Answer

    Solution

    As no condition has been given,
    So, let A = B = C = D = 0°
    then sin(B – C) cos(A – D)+ sin (A – B) cos (C – D ) + sin (C – A) cos(B – D)
    = sin0º cos0º + sin0º cos0º + sin0º cos0º
    = 0 + 0 + 0 = 0

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