[tex] \huge \sf \red{\underline \blue{question}} \downarrow[/tex]

[tex]2 \sqrt{2} ( \cos \frac{\pi}{4} + i \sin \frac{\pi}{4} ) \\ [/tex]
[tex] \rule{200pt}{5pt}[/tex]
Please don't spam and don't take screenshot from web.
I would be appreciated if solved on copy or using latex.

Thank You!​