Three Dimensional Geometry
NCERT Class 12
CBSE
Grade 12
Question:
Find direction cosines of line $\dfrac{x+1}{2} = \dfrac{y}{-1} = \dfrac{z-2}{2}$. Also find a point on it at a distance of 6 units from $(-1, 0, 2)$.
Step-by-Step Solution
Direction cosines: $(2/3, -1/3, 2/3)$. [1.5 Marks]
Point at distance 6: $(3, -2, 6)$ or $(-5, 2, -2)$. [1.5 Marks]
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🎯 Official CBSE Marking Scheme:
Evaluating direction cosines: 1.5 Marks
Evaluating point at distance 6: 1.5 Marks
Correct Answer:
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