sin L=cos (90-L)
cos L= sin (90-L)
tg L=ctg (90-L)
ctg L= th(90-L)
rowiąż :
sin L= osiem dziesiątych
cos L= trzy czwarte
tg L=4
ctgL=2
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sin L = 82-L
cos L = 67,5-L
tg L = 22,5-L
ctgL = 45-L