Class 12 Vector Algebra · Mcq Single Correct1 Marksorthogonality
Class 12 Maths · Vector Algebra · Mcq Single Correct #9
Find p if (2,p,1) and (−4,−6,26) are perpendicular.
✅ Step-by-Step Solution
Final Answer: Option (A): 3
- Their dot product is −8 − 6p + 26 = 18 − 6p. Set it to zero to obtain p = 3.
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