Given that,
→A=^i+2^j+2^k
→B=^i−^j+n^k
We know that,
If two vectors are perpendicular to each other then their resultant is 0.
Now,
→A⋅→B=0
(^i+2^j+2^k)⋅(^i−^j+n^k)=0
1−2+2n=0
n=12
Hence, the value of n is 12
If the two vectors ¯A=2^i+3^j+4^ and ¯B=^i+2^j−n^k are perpendicular, then the value of n is: