Question Number 1066 by 123456 last updated on 27/May/15
$$\underset{\mathrm{0}} {\overset{\pi/\mathrm{2}} {\int}}\frac{{x}}{\mathrm{tan}\:{x}}{dx} \\ $$
Answered by malwaan last updated on 01/Jun/15
$$\frac{\pi}{\mathrm{2}}{log}\left(\mathrm{2}\right) \\ $$