The component of vector A=2hati+3hatj al...

The component of vector `A=2hati+3hatj` along the vector `hati+hatj` is

A

`(5)/(sqrt2)`

B

`10sqrt2`

C

`5sqrt`

D

5

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The correct Answer is:

A

`(vecA.vecB)/(|veci+hatj|)=((2hati+3hatj)(hati+hatj))/(sqrt(2))=(2+3)/(sqrt2)=(5)/(sqrt(2))`

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