November 2018 1 47 Report

Oblicz:

A) sin 30 ° × ctg 30 ° - cos 30 ° = B) 2 cos 60 ° - 3 sin 30 ° = C ) ( ctg 60 ° x tg 60 ° ) ³ = D) cos 30 + 3 sin 60 =


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