October 2018 1 65 Report

Czy istnieje kąt alfa ,alfa należy ( 0 stopni, 90 stopni ) :

a) sin alfa = 8/17 i cos alfa = 15/17

b) sin alfa = 0,45 i cos alfa = 0,55

c) tg alfa = 1,5 i ctg alfa = 0,6

d) tg alfa = 0,8 i ctg alfa = 1,25


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