Introduction to 3DMedium
Question
The coordinates of a point on the line 
= z at a distance 4
from the point (1, -1, 0) are -
= z at a distance 4 from the point (1, -1, 0) are -Options
A.(9, -13, 4)
B.(8
+ 1, - 12 - 1, 4)
+ 1, - 12 - 1, 4)C.(-7, 11, -4)
D.(-8
+ 1, 
12 - 1, -4 
)
+ 1, 12 - 1, -4 )Solution
Let any point on line 
= z = λ
be (1 + 2λ, - 1 - 3λ, λ)
⇒ | λ | = 4 ⇒ l = ± 4
∴ Points (9, - 13, 4 ) and (- 7, 11, - 4)
= z = λbe (1 + 2λ, - 1 - 3λ, λ)
⇒ | λ | = 4 ⇒ l = ± 4
∴ Points (9, - 13, 4 ) and (- 7, 11, - 4)
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