A+B+C=180
3B=180
B=60
A=120-C
tg(120-C)tgC=2+根3
(-根3-tgC)/(1-根3*tgC)tgC=2+根3
(tgC)^2-(3+根3)tgC+2+根3=0
tgC=1或tgC=2+根3
C=45,A=75或C=75,A=45
a=8,b=4根6,c=4根3+4
或a=4根3+4,b=4根6,c=8
A+B+C=180
3B=180
B=60
A=120-C
tg(120-C)tgC=2+根3
(-根3-tgC)/(1-根3*tgC)tgC=2+根3
(tgC)^2-(3+根3)tgC+2+根3=0
tgC=1或tgC=2+根3
C=45,A=75或C=75,A=45
a=8,b=4根6,c=4根3+4
或a=4根3+4,b=4根6,c=8