Question

If `vec A + vec B= vec C`, what is the magnitude of `vecC`, if `vecA` and `vecB` are unit vectors at right angle to each other?

Answer 1

`|vec C|=sqrt 2`

Explanation:

`vec A + vec B= vec C`
`"magnitude of C is given by:"`
`1^2+1^2=(vec C)^2`
`|vec C|=sqrt 2`