Răspuns :

Noramaria47id
Pai stim ca acel unghi are 180 ^ ( ^ = grade )
AOM=90 ^
BON=AOBx2

AON=90 ^
90 : 2 = 45^
90 : 3 = 30^
AOB=30^
BON=60^
BOM=90+30=120

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Davidmitrea5id
AOM=90^
BON=AOB^2
AON=90^
90:2=45^
90:3=30^
AOB=30^
BON=60^
BOM=90+30=120

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