0 votes 0 votes Let $z=x+jy$ where $j=\sqrt{-1}$. Then $\overline{\cos z}$ = $\cos z$ $cos\overline{z}$ $\sin z$ $\sin\overline{z}$ Analysis of complex variables gate2017-in analysis-of-complex-variables complex-number + – soujanyareddy13 asked Nov 1, 2020 • recategorized Mar 20, 2021 by Lakshman Bhaiya soujanyareddy13 2.7k points answer See all 0 reply