January 2019 0 48 Report
Funkcje trygonometryczne. Oblicz.

 a) \frac{sin270 + 2cos(-60)}{tg(-225)} \\ b) (sin \frac{13}{6} \pi +cos \frac{7}{3} \pi ) x ctg(- \frac{ \pi}{4}) \\ c) \frac{sin \frac{5}{4} \pi -cos \frac{ \pi}{4} }{tg \frac{4}{3} \pi }
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