Subtema: Seno, coseno, tangente, cotangenteParte: AProject ID: 9000032110Accepted: 1Clonable: 0Easy: 1\(\cos \left ( \frac{\pi }{4}\right ) = ?\)\(\frac{\sqrt{2}} {2} \)\(0\)\(-\sqrt{3}\)\(-\frac{\sqrt{2}} {2} \)\(- 1\)\(\sqrt{3}\)
