Question
Find the value of 'p' for which the vectors `3hati+2hatj+9hatk and hati-2phatj+3hatk` are parallel
Solution
We know that for two vectors to be parallel, there direction cosines should have the same ratios.
`∴ 3/1=2/(−2p)=9/3`
`⇒ p=−1/3`
Is there an error in this question or solution?
Solution Find the value of 'p' for which the vectors 3i+2j+9k and i-2pj+3k are parallel Concept: Basic Concepts of Vector Algebra.
