Multiple Choice Questions on If sin x y cos 3 x y then the value of tan 2 x y is ........ for Mathematics - All Exams Preparation

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Multiple Choice Questions

If sin x y cos 3 x y then the value of tan 2 x y is ........

Quantitative Aptitude ( CCS) Trignometry
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    If sin (x+y) = cos [3(x+y)] , then the value of tan [2(x+y)] is

    √3

    Incorrect Answer

    1

    Correct Answer

    0

    Incorrect Answer

    1/√3

    Incorrect Answer
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    Explanation:

    x+ y +3x+3y = 90°
    4x + 4y= 90°
    2x+2y = 45°
    tan(2x +2y) = tan 45°=1

    By: MIRZA SADDAM HUSSAIN
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