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KVPY Sample Paper KVPY Stream-SX Model Paper-11

  • question_answer
    If\[x={{\sin }^{-1}}(sin10)\]and\[y={{\cos }^{-1}}(cos10),\]then \[y\,-\,x\]

    A) \[\pi \]

    B) \[7\pi \]

    C) 0

    D) 10

    Correct Answer: A

    Solution :

    \[x={{\sin }^{-\,1}}\,(sin10)=3\pi -10\]
    \[y={{\cos }^{-\,1}}\,(cos10)\]
    \[=4\pi -10\]
    \[y-x=\pi .\]


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