行吧。行就采纳吧~
你不是算出来了么....2sinA = sinBB = 2π/3 - A2sinA = sin(2π/3 - A) = sin2π/3cosA - cos2π/3sinA2sinA = sqrt(3)/2 cosA + sinA/2cosA/sinA = sqrt(3)A = π/6
面积S=1/2absin c =√3解出ab的积,再用cos c 的公式就可以解出a和b
C=π/3 AB之间不就有关系了吗把B一换带进去就行了