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ľÀþAB:y=tan(a)*(x+1),ľÀþAD:y=-x/sqrt(3)
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ÅÀA¤ÎxºÂɸ:-sqrt(3)*tan(a)/(sqrt(3)*tan(a)+1)
ÅÀA¤ÎyºÂɸ:tan(a)/(sqrt(3)*tan(a)+1)
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(sqrt(3)*tan(a)^2-2*tan(a)-sqrt(3))/(tan(a)^2+2*sqrt(3)*tan(a)-1) ¤è¤ê
ľÀþAP:
y=(sqrt(3)*tan(a)^2-2*tan(a)-sqrt(3))*(x+sqrt(3)*tan(a)/(sqrt(3)*tan(a)+1))
/(tan(a)^2+2*sqrt(3)*tan(a)-1)+tan(a)/(sqrt(3)*tan(a)+1)
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/(4*sqrt(3)*tan(a)^3+4*tan(a)^2-4*sqrt(3)*tan(a)-4))
ÅÀC¤ÎyºÂɸ: (tan(a)^3+sqrt(3)*tan(a)^2+tan(a)+sqrt(3))
/(4*sqrt(3)*tan(a)^3+4*tan(a)^2-4*sqrt(3)*tan(a)-4)
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tan¢ÜBCD=sqrt(5)*sqrt(2*sqrt(5)+5)/5¤³¤ì¤è¤ê¢ÜBCD=54¡ë
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