October 2018 1 21 Report

Sprawdź tożsamości:

1. \franc{ctg\alpha-1}/{1-tg\alpha}=ctg\alpha 2.(tg^{2}\alpha-sin^{2}\alpha)*ctg^{2}\alpha=sin^{2}\alpha 3.ctg^{2}\alpha-cos^{2}\alpha=ctg^{2}\alpha*cos^{2}\alpha


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