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10th Class Mathematics Sample Paper Maths Olympiad Model Test Paper-8

  • question_answer
    If \[m=x\sin \phi .\cos \theta \,,\] \[n=x\sin \phi \] and \[r=x\,\cos \phi \]then \[{{m}^{2}}+{{n}^{2}}+{{r}^{2}}=\]______

    A)  1                                

    B)  2

    C)  \[{{x}^{2}}\] 

    D)  \[\frac{1}{{{x}^{2}}}\]

    E)  None of these

    Correct Answer: C

    Solution :

    Not Available                


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