Advertisements
Advertisements
प्रश्न
Find the value of p, for which the vectors `veca = 3hati + 2hatj + 9hatk` and `vecb = hati + phatj + 3hatk` are perpendicular to each other.
बेरीज
Advertisements
उत्तर
`veca * vecb = 0`
`(3hati + 2hatj + 9hatk) * (hati + phatj + 3hatk) = 0`
(3 × 1) + (2 × p) + (9 × 3) = 0
3 + 2p + 27 = 0
2p + 30 = 0
2p = –30
p = –15
shaalaa.com
या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
