1. Find |A|
`A=(1,2,2)`
Solution:
Here `vec A=(1,2,2)`
`|vec A|`
`=sqrt(A_1^2 + A_2^2 + A_3^2)`
`=sqrt(1^2 + 2^2 + 2^2)`
`=sqrt(1 + 4 + 4)`
`=sqrt(9)`
`=3`
2. Find |A|
`A=(3,4)`
Solution:
Here `vec A=(3,4),vec B=(4,3),vec C=(3,4)`
`|vec A|`
`=sqrt(A_1^2 + A_2^2)`
`=sqrt(3^2 + 4^2)`
`=sqrt(9 + 16)`
`=sqrt(25)`
`=5`
This material is intended as a summary. Use your textbook for detail explanation.
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