JEE Mains · Maths · STD 12 - 10. vector algebra
The sum of all values of \(\alpha\), for which the points whose position vectors \(\hat{i}-2 \hat{j}+3 \hat{k}, 2 \hat{i}-3 \hat{j}+4 \hat{k}\), \((\alpha+1) \hat{i}+2 \hat{k}\) and \(9 \hat{i}+(\alpha-8) \hat{j}+6 \hat{k}\) are coplanar, is equal to
- A \(6\)
- B \(4\)
- C \(-2\)
- D \(2\)
Answer & Solution
Correct Answer
(D) \(2\)
Step-by-step Solution
Detailed explanation
\(\left[\begin{array}{ccc} OA & OB & OC \end{array}\right]=0\)…
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