Question

If PQ = 4i+3j+2k, find /PQ/​

Answer 1

| PQ | =
`√(29)`

Explanation:

Given

PQ = ai + bj + ck , then

| PQ | =
`√(a^2+b^2+c^2)`

Here PQ = 4i + 3j + 2k , then

| PQ | =
`√(4^2+3^2+2^2)` =
`√(16+9+4)` =
`√(29)`