wiedząc, że tgY= 2 +√3 i ctg 15 stopni =2+√3, oblicz miarę kata Y.
ctg alfa = tg ( 90 - alfa)
zatem
gamma = 90 st - 15 st = 75 st
==============================
ctg15=tg(Y)
ctg15=tg(90-15)=tg(75)
Y=75 stopni
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ctg alfa = tg ( 90 - alfa)
zatem
gamma = 90 st - 15 st = 75 st
==============================
ctg15=tg(Y)
ctg15=tg(90-15)=tg(75)
Y=75 stopni