TS EAMCET · Maths · Three Dimensional Geometry
If the foot of the perpendicular drawn from the point \((1,0,-2)\) to the plane \(\pi\) is \((2,0,-1)\) and the equation of the plane \(\pi\) is \(a x+b y+c z=2\) then \(a^2+b^2+c^2=\)
- A 2
- B 8
- C 4
- D 9
Answer & Solution
Correct Answer
(B) 8
Step-by-step Solution
Detailed explanation
\(\begin{aligned} & \therefore \quad a=2, b=0, c=2 \\ & \therefore \quad a^2+b^2+c^2=4+0+4=8 .\end{aligned}\)
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