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10th Class Mathematics Sample Paper Maths Olympiad Model Test Paper-19

  • question_answer
    If \[p\cos \theta -q\cos \theta =\sqrt{{{p}^{2}}+{{q}^{2}}-{{r}^{2}}},\] then the value of \[p\sin \theta +q\cos \theta \] is equal to:

    A)  \[\sqrt{{{p}^{2}}+{{q}^{2}}+{{r}^{2}}}\]

    B)  \[\sqrt{{{p}^{2}}-{{q}^{2}}+{{r}^{2}}}\]

    C)   \[\sqrt{{{p}^{2}}+{{q}^{2}}}\]                  

    D)   \[r\]

    E)  None of these

    Correct Answer: D

    Solution :

     Not Available


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