Question Number 213499 by issac last updated on 06/Nov/24
$$\int_{\mathrm{0}} ^{\:\mathrm{2}\pi} \frac{{z}\centerdot\mathrm{sin}\left({z}\right)}{\mathrm{1}+\mathrm{cos}^{\mathrm{2}} \left({z}\right)}\mathrm{d}{z}\:=?\:\left(\mathrm{contour}\:\mathrm{integral}\right) \\ $$$$\mathrm{pls}\:\mathrm{help}..... \\ $$