Question

已知三角形ABC的两边边长和AB两点的坐标,如何确定C点坐标?

Answer 1

设c为（x3,y3）向量ac=（x3-x1,y3-y1）所以ac={（x3-x1）^2+(y3-y1)^2}^0.5=n 向量ab=（x2-x1,y2-y1）所以ab={（x2-x1）^2+(y2-y1)^2}^0.5=m

然后嘛死算