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aratati ca tg 30,ctg30+tg60,ctg30=10\3

Răspuns :

Tg 30=rad 3/3
Ctg30=rad 3
Tg 30*ctg30=1
Tg60=rad3
Ctg30=rad3
Tg60*ctg30=3
Deci suma va fi 4... Nu 10/3.. Probabil e ceva gresit...