Multiple Choice Questions on If and then x y ........ for 11th Standard Preparation

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Multiple Choice Questions

If and then x y ........

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    If sin^{-1}x+sin^{-1}y=\frac{2\pi }{3}and cos^{-1}x-cos^{-1}y=\frac{\pi }{3}, then (x,y) =

    (1, 1) 

    Incorrect Answer

    \left ( \frac{1}{2} ,1\right )

    Correct Answer

    \left ( 1,\frac{1}{2} \right )

    Incorrect Answer

    \left ( \frac{1}{3},\frac{1}{3} \right )

    Incorrect Answer
    Explanation:

    \left ( \frac{1}{2} ,1\right )

    By: Swaminath Yadav
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