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Intr-un triunghi dreptunghic ABC, m(A) = 90 AB=10cm ctg c=2.5
Calculati
AC=?
Bc=?
ctg B=?
tg C=?


Răspuns :

B
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|
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A_____________C

ctgC=AC/AB
AC/10=25/10 =>AC=25 cm
BC^2=100+625=725 =>BC=5rad29 cm
ctgB=AB/AC=10/25=0,4
tgC=AB/AC=0,4