October 2018 1 10 Report

a )cos 48 (stopni) / cos 42 st * tg 48 st =1

b) sin 10 st * pod pierwiastkiem 1 + ctg2 10 st po pierwiastku = 1

c) ( 1+ cos 7 st ) ( 1 - cos 7 st) - cos2 83 st = 0

d) cos2 5 stopni + cos2 25st + cos2 65 st + cos2 85 st = 2


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