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  3. 11th Class
  4. Mathematics

11th Class Mathematics Sample Paper Maths Olympiad Model Paper-3

  • question_answer
    The value of \[\cos 12{}^\circ +\cos 84{}^\circ +\cos 156{}^\circ +\cos 132{}^\circ \] is

    A)  1                                

    B)  \[\frac{1}{2}\]

    C)  \[-\frac{1}{2}\]

    D)  \[\frac{1}{8}\]

    E)  None of these

    Correct Answer: C

    Solution :

     Not Available               


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