求助
[img]http://p13.freep.cn/p.aspx?u=v20_p13_p_0808130012004748_0.jpg[/img] H[(Axa/CosA+Bxb/CosB+Cxc/CosC)/(a/CosA+b/CosB+c/CosC),(Aya/CosA+Byb/CosB+Cyc/CosC)/(a/CosA+b/CosB+c/CosC)]原H为 (X-Xh)²+(Y-Yh)²=R²......*
E[(Xa+Xc)/2,(Ya+Yc)/2]
F[Xa+Xb)/2,(Ya+Yb)/2]
Yef=(Yc-Yb)/(Xc-Xb)*[x-(Xa+Xc)/2]+(Ya+Yc)/2......1
后面的不会了 那些双曲线的看不懂 后面应该解得开的:)
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