oblicz wartosc wyrazenia: bardzo dokladne obliczenia
a) tg43°=ctg(90°-43°)=ctg47°
tgα*ctgα=1
b) tgα=1/ctgα
ctgα=1/tgα
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a) tg43°=ctg(90°-43°)=ctg47°
tgα*ctgα=1
b) tgα=1/ctgα
ctgα=1/tgα