If x = tan 15º then what will be the value of x² + 1/x².

  1. 16
  2. 12
  3. 10
  4. 14
Anurag Mishra Professor Asked on 18th April 2016 in Maths.
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    Answer: (4) 14 

    Anurag Mishra Professor Answered on 19th May 2016.
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