Podoblasť: Sinus, kosinus, tangens a kotangens (goniometrické funkcie)Časť: AProject ID: 9000032105Accepted: 1Clonable: 0Easy: 1\(\cos \left ( \frac{\pi }{2}\right ) =?\)\(0\)\(-\frac{\sqrt{2}} {2} \)\(\frac{\sqrt{2}} {2} \)\(- 1\)\(1\)\(-\sqrt{3}\)
