December 2018 1 18 Report
Uprosc wyrazenia:
a)sinβ-sin(2β)/cosβ
b)cos(2β)/cosβ-sinβ - sinβ

ustal,czy rownosc jest prawdziwa:
a)sin(2α)/1-cos(2α)=ctgα
b)cos(do czwartej potegi)α-sin(do czwartej potegi)α=cos(2α)
c)tgα+ctgα=2/sin(2α)

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