Math Chapter Wise Complex Number, De Moivre's Theorem And Nth Root Of Unity English MCQ UP TGT-2016 (08-03-2019) Q.If A+iB = tan (x+iy), then the value of tan 2x is as A2 2 2A 1+ A + B B2 2 2A 1- A + B C2 2 2A 1- A - B DNone of these Show answer Correct answer: 2 2 2A 1- A - B