Railways R.R.C. (Patna) Solved Paper Held on 1st_Shift 23-11-2014

  • question_answer
    The maximum value of \[(sin\theta +cos\theta )\]__

    A) 1                                 

    B) \[\sqrt{2}\]

    C) 2                                 

    D) \[2\sqrt{2}\]

    Correct Answer: B

    Solution :

    The maximum value of (\[\sin \theta +\cos \theta \]) \[=\sqrt{{{(1)}^{2}}+{{(1)}^{2}}}\]  \[=\sqrt{1+1}=\sqrt{2}\]


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