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11th Class Mathematics Sample Paper Mathematics Olympiad - Sample Paper-13

  • question_answer
    The domain of the function f defined by  \[cos\,(\theta -\alpha )=a,\text{ }cos\,(\theta -\beta )=b\]   is equal to

    A)  \[(-\,\infty ,-1)\cup (1,4]\]

    B)  \[(-\,\infty ,-1]\cup (1,4]\]

    C)  \[(-\,\infty ,-1)\cup [1,4]\]

    D)  \[(-\,\infty ,-1)\cup [1,4)\]

    Correct Answer: A

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