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TS EAMCET · Maths · Three Dimensional Geometry

A plane containing two lines whose direction ratios are -1,2,1 and 1,3,2 passes through the point 2,1, k. If this plane also passes through the point 3,-1,4, then k=

  1. A 5
  2. B 3
  3. C 6
  4. D -3
Verified Solution

Answer & Solution

Correct Answer

(A) 5

Step-by-step Solution

Detailed explanation

Since the plane contain two lines whose direction ratios are -1,2,1 and 1,3,2 . So, normal vector to the plane is given by i^j^k^-121132=i^+3j^-5k^ Since, the plane passes through 2,1,k, its equation is given by x-2+3y-1-5z-k=0 If it passes through 3,-1,4, then…