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hati and hatj are unit vectors along x- ...

`hati and hatj` are unit vectors along x- and y- axis respectively. What is the magnitude and direction of the vectors `hati + hatj, and hati- hatj` ? What are the components of a vector `A= 2 hati + 3hatj` along the directions of `hati + hatj and hati- hatj`? [You may use graphical method]

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