HB≈2,13cm,HC≈4,60cm.

\(A H = 4 \textrm{ } \text{cm} , \textrm{ }\textrm{ } A C \approx 6 , 10 \textrm{ } \text{cm}\).

Góc: \(\textrm{ }\textrm{ } A \approx 79^{\circ} , \textrm{ }\textrm{ } B = 60^{\circ} , \textrm{ }\textrm{ } C \approx 41^{\circ} .\)

Cạnh: \(\textrm{ }\textrm{ } A B = 3 , \textrm{ }\textrm{ } B C = 4 , 5 , \textrm{ }\textrm{ } A C \approx 3 , 94.\)

Góc: \(\textrm{ }\textrm{ } A \approx 78 , 8^{\circ} , \textrm{ }\textrm{ } B = 70^{\circ} , \textrm{ }\textrm{ } C \approx 31 , 2^{\circ} .\)

Cạnh: \(\textrm{ }\textrm{ } A B = 2 , 1 \textrm{ } \text{cm} , \textrm{ }\textrm{ } A C = 3 , 8 \textrm{ } \text{cm} , \textrm{ }\textrm{ } B C \approx 3 , 97 \textrm{ } \text{cm} .\)

Góc: \(\textrm{ }\textrm{ } A = 75^{\circ} , \textrm{ }\textrm{ } B = 65^{\circ} , \textrm{ }\textrm{ } C = 40^{\circ} .\)

Cạnh: \(\textrm{ }\textrm{ } B C = 4 , 2 \textrm{ } \text{cm} , \textrm{ }\textrm{ } A C \approx 3 , 95 \textrm{ } \text{cm} , \textrm{ }\textrm{ } A B \approx 2 , 80 \textrm{ } \text{cm} .\)

• ∠A=70∘,∠B=65∘,∠C=45∘.
• \(A B = 2 , 8 \textrm{ } \text{cm} , \textrm{ }\textrm{ } A C \approx 3 , 59 \textrm{ } \text{cm} , \textrm{ }\textrm{ } B C \approx 3 , 72 \textrm{ } \text{cm} .\)