11th Class Mathematics Sample Paper Maths Olympiad Model Test Paper-10

  • question_answer
    If e is the eccentricity of the hyperbola \[\frac{{{x}^{2}}}{{{a}^{2}}}-\frac{{{y}^{2}}}{{{b}^{2}}}=1\] and \[\theta \] is the angle between the asymptotes, then \[\cos \left( \frac{\theta }{2} \right)\] is equal to______.

    A)  e                                 

    B)  \[\frac{1}{e}\]

    C)  \[\frac{-\,1}{e}\]                                   

    D)  \[-\,e\]

    E)               None of these

    Correct Answer: B

    Solution :

     Not Available

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