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    Maths-
    General
    Easy

    Question

    text  If  end text sin text end text A plus sin space B equals square root of 3 left parenthesis cos space B minus cos space A right parenthesis then sin space 3 A plus sin space 3 B equals

    1. 0
    2. 2
    3. 1
    4. -1

    The correct answer is: 0

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    text  If  end text x cos space theta equals y cos space open parentheses theta plus fraction numerator 2 pi over denominator 3 end fraction close parentheses equals z cos space open parentheses theta plus fraction numerator 4 pi over denominator 3 end fraction close parentheses then the value of 1 over x plus 1 over y plus 1 over z equals

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