limx→0 xcot⁡(4x)sin2⁡xcot2⁡(2x) is equal to 

limx0xcot(4x)sin2xcot2(2x) is equal to 

  1. A
  2. B
  3. C
  4. D

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    Solution:

    Here, limx0xcot(4x)sin2xcot2(2x)=limx0xtan22xtan4xsin2x

    =limx0xtan22x4x24x2tan4x4x4xsin2xx2x2=1

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