December 2018 1 10 Report
Oblicz, bez użycia tablic trygonometrycznych i kalkulatora:

c) (cos390st*sin240st+tg315st*cos300st) / (ctg150st*sin120st-tg420st*cos(-450st))
d) (tg315st*ctg(-495st)+ctg810st*sin930st / (2cos1020st*sin810st+cos1260st*sin630st)

Odpowiedź do c) wynosi 5/6 a do d) -(1/2)
Z góry dziękuję za obliczenia, daję naj:)
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