Podoblast: Sinus, kosinus, tangens a kotangensČást: AProject ID: 9000032005Accepted: 1Clonable: 0Easy: 1\(\mathop{\mathrm{cotg}}\nolimits \left ( \frac{\pi }{2}\right ) =?\)\(0\)\(\frac{\sqrt{3}} {3} \)\(\frac{\sqrt{2}} {2} \)\(1\)\(-\frac{\sqrt{2}} {2} \)není definován
