先往一个方向走200/sqrt(3),然后沿着圆的切线走,和圆相切以后沿着圆弧走7/6*PI,最后再沿切线走100。
先往一个方向走200/sqrt(3),然后沿着圆的切线走,和圆相切以后沿着圆弧走7/6*PI,最后再沿切线走100。
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