October 2018 1 21 Report

Zapisz wyrażenia w prostrzej postaci:

a) sin \alpha \cdot cos^{2} \alpha + sin^{3}\alpha

b) \frac{1}{sin^{2}\alpha} \cdot (1 - cos^{2}\alpha)

c) \frac{1}{sin\alpha} - cos\alpha \cdot ctg\alpha

Dzięki :D


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