Podoblasť: Sinus, kosinus, tangens a kotangens (goniometrické funkcie)Časť: AProject ID: 9000032114Accepted: 1Clonable: 0Easy: 1\(\cos \left ( \frac{\pi }{6}\right ) =?\)\(\frac{\sqrt{3}} {2} \)\(-\frac{\sqrt{3}} {2} \)\(\frac{\sqrt{2}} {2} \)\(\frac{1} {2}\)\(0\)\(-\frac{1} {2}\)
