2. Sample Papers
  3. 11th Class
  4. Mathematics

11th Class Mathematics Sample Paper Mathematics Sample Paper-3

  • question_answer
    If \[\frac{x}{\cos \theta =}\frac{y}{\cos \left( \theta -\frac{2\pi }{3} \right)}=\frac{z}{\cos \left( \theta +\frac{2\pi }{3} \right)}\]then x + y + z is equal to

    A)  1                    

    B)  0

    C)  -1                   

    D)  None of these

    Correct Answer: B

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