Manipal Engineering Manipal Engineering Solved Paper-2012

  • question_answer
    The maximum value of\[3\cos \theta +4\sin \theta \]is

    A) \[-5\]                                    

    B) \[5\]

    C) \[25\]                   

    D)         None of these

    Correct Answer: B

    Solution :

    The maximum value of\[3\cos \theta +4\sin \theta \]                 \[=\sqrt{{{3}^{2}}+{{4}^{2}}}\]                 \[=\sqrt{25}=5\]


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