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1
Fie triunghiul ABC cu
A= 90°.
a) Dacă AB = 4 cm şi
AC, BC.
B = 60°, aflați C,
b) Dacă AC = 12 cm şi sin B = 0,6, aflați AB,
BC şi tg B.
c) Dacă AB = 3. AC şi BC= √10 cm, aflați sin B
şi înălțimea corespunzătoare ipotenuzei.
5