10th Class Mathematics Sample Paper Maths Olympiad Model Test Paper-15

  • question_answer
    If \[\cos \theta =\frac{1}{\sqrt{2}},\] then \[\frac{\sin \theta \cos \theta +{{\sin }^{2}}\theta +\cos \theta }{\sin \theta \cos \theta +{{\cos }^{2}}\theta -\cos \theta }\] is equal to :

    A)  1                                

    B)  \[-\,1\]

    C)  \[\sqrt{2}\]                               

    D)  \[\frac{\sqrt{2}+1}{\sqrt{2}-1}\]

    E)  None of these

    Correct Answer: D


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