Math Chapter Wise Hyperbolic And Logarithmic Function Of A Complex Variable English MCQ UP PGT 2021 Q.Real part of sin2 (x + iy) is – A[ ] 1 1 cos2 cosh 2y 2 + x B[ ] 1 1– cos2 cosh 2y 2 x C[ ] 1 1 sin 2 sinh 2y 2 + x D[ ] 1 1– sin 2 cosh 2y 2 x Show answer Correct answer: [ ] 1 1– cos2 cosh 2y 2 x