Question

YC

求解

類題 9 空間坐標中,點P(a,b,c)位在第一卦限,設P到x軸、y軸、z軸的距離比
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1) 例為VS: 10:13,a:b:C平一楼(S)、一中間空
c=
1)
2唄,讓已到立單,頔向五≦
再入,

Answer 1

綾

a^2 + b^2 = 13*r^2
a^2 + c^2 = 10*r^2
b^2 + c^2 = 5*r^2
————————————
a^2 + b^2 + c^2 = (13+10+5)*r^2/2 = 14*r^2

a^2 = 9*r^2 => a = 3r
b^2 = 4*r^2 => b = 2r
c^2 = 1*r^2 => c = 1r

a : b : c = 3 : 2 : 1