October 2018 1 36 Report

sprawdź czy zachodzi tożsamość

a) (\frac{1}{cos\alpha} - cos\alpha)(\frac{1}{sin\alpha} - sin\alpha)(tg\alpha + ctg\alpha)=1 </span></p> <p><span>b) \frac{tg^{2}\alpha+1}{ctg^{2}\alpha+1}= tg^{2}\alpha


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