January 2019 1 5 Report
NA JUTRO/ DAJE NAJ! Rozwiąż równania:
a) cos(3x \frac{ \pi }{3} = \frac{ \sqrt{2}}{2} \\ b) tg^{2} x=3 \\ c) cos2x+2=3cosx \\ d) sin(x+ \frac{2 \pi }{3} )-sin(x+ \frac{ \pi x}{3} )= \frac{ \sqrt{3} }{2}

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