poate cineva pls pls

Răspuns:
Explicație pas cu pas:
AB AC BC sin B sin C cos B cos C tg B tg C ctgB ctg C
12 16 20 4/5 3/5 3/5 4/5 4/3 3/4 3/4 4/3
18 24 30 4/5 3/5 3/5 4/5 3/4 3/4 3/4 4/3
28 21 35 3/5 4/5 4/5 3/5 3/4 4/3 4/3 3/4
24 32 40 4/5 3/5 3/5 4/5 4/3 3/4 3/4 4/3
36 27 45 3/5 4/5 4/5 3/5 3/4 4/3 4/3 3/4
30 40 50 4/5 3/5 3/5 4/5 4/3 3/4 3/4 4/3