Advertisements
Advertisements
प्रश्न
If the two vectors `3hati + αhatj + hatk` and `2hati - hatj + 8hatk` are perpendicular to each other, then find the value of α.
योग
Advertisements
उत्तर
`veca = 3hati + αhatj + hatk`
and `vecb = 2hati - hatj + 8hatk`
∵ `veca` and `vecb` are perpendicular.
∴ `veca*vecb` = 0
(3)(2) + α(–1) + 1 × 8 = 0
6 – α + 8 = 0
`\implies` α = 14
shaalaa.com
क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
