September 2018 1 18 Report
1)Dane: sinα*cosα=1/3 α-Kąt ostry w trójkącie prostokątnym
Oblicz:
sin^2α-sin^4α=?
2)α,β-kąty ostre trójkąta prostokątnego sinα+sinβ=7/5
Oblicz:
a)sinα*sinβ=?
b)cosα*cosβ=?

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