Q 1936101972.     `hati` and `hatj` are unit vectors along `x` and `y` axis
repcctivcly. 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
direction of `hati + hatJ` and `hati-hatJ` ?

NCERT Chapter Solution 4/4.22
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