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11th Class Mathematics Sample Paper Maths Olympiad Model Test Paper-11

  • question_answer
    If in a \[\Delta \,ABC,\] \[cos\,A\,\,cos\,B+sin\,A\,\,sin\,B\,\,sin\,C=1,\]then a : b : c is equal to ________.

    A)  \[1:2:3\]                       

    B)  \[1:\sqrt{2}:3\]

    C)  \[1:1:\sqrt{2}\] 

    D)  \[1:\sqrt{2}:2\]

    E)  None of these

    Correct Answer: C

    Solution :

     Not Available   


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