please only find the ratio and show me how. step by step. #3D geometry
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please only find the ratio and show me how. step by step. #3D geometry
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or other way is to write the equation of the line by taking any two points.
and then put the value of third point in the equation , if the equation satsifies then they line on the same line else doesn't.
let point divide the line in ratio m:n
then we know that the formula
(mx2+ nx1)/(m+n) ,(my2 +ny1)/m+n,(mz2 +nz1)/m+n,
is the point that divides the line in that ratio.
so 5 = 3n+9m/(m+n)
5m+5n=3n+9m
2n=4m
m/n = 1/2
therefore ratio is 1:2