角A=60°,b=1,面积=根号3,
S=1/2*b*c*sinA=√3/4*c=√3 c=4
a^2=b^2+c^2-2bc*cosA=√13
令a/sinA=b/sinB=c/sinC=m m=√13/sin60°=2√39/3
a=m*sinA b=m*sinB c=m*sinC
(a+b+c)/(sinA+sinB+sinC)=m(sinA+sinB+sinC)/(sinA+sinB+sinC)=m=2√39/3
角A=60°,b=1,面积=根号3,
S=1/2*b*c*sinA=√3/4*c=√3 c=4
a^2=b^2+c^2-2bc*cosA=√13
令a/sinA=b/sinB=c/sinC=m m=√13/sin60°=2√39/3
a=m*sinA b=m*sinB c=m*sinC
(a+b+c)/(sinA+sinB+sinC)=m(sinA+sinB+sinC)/(sinA+sinB+sinC)=m=2√39/3