Math Chapter Wise Complex Integration, Cauchy's Theorem And Calculus Of Residue English MCQ UP PGT-2016 (02-02-2019) Q.If ((()) sin x iy e A iB, + = + = + where A and B are real, then 2 2 A B + + is equal to Asin xcosh y/e Bsinh xcosy/e Csinh xcosh y/e Dsin xcosy/e Show answer Correct answer: sin xcosh y/e