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9th Class Mathematics Sample Paper Maths Olympiad Model Test Paper-20

  • question_answer
    If \[\cot \theta \,(1+\sin \theta )=2\,m\] and \[\cot \theta \,(1-\sin \theta )=2\,n\] then \[{{({{m}^{2}}-{{n}^{2}})}^{2}}\] equals to ____.

    A)  2 mn               

    B)  8 mn

    C)  4 mn

    D)  3 mn

    E)  None of these

    Correct Answer: C

    Solution :

     Not Available               


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