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cot space theta equals fraction numerator 2 tan space 71 divided by 2 to the power of ring operator 0 over denominator 1 minus tan squared space 71 divided by 2 end fraction then sin space 3 theta equals

  1. fraction numerator negative 1 over denominator square root of 2 end fraction
  2. fraction numerator square root of 3 over denominator 2 end fraction
  3. fraction numerator 1 over denominator square root of 2 end fraction
  4. 1 half square root of 2 minus square root of 2 end root

The correct answer is: fraction numerator negative 1 over denominator square root of 2 end fraction


    sol.fraction numerator 2 tan space theta over denominator 1 minus tan squared space theta end fraction equals tan space 2 theta

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