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The vector vecB = 3j + 4k is to be writt...

The vector `vecB = 3j + 4k` is to be written as the sum of a vector `vecB_(1)` parallel to `vecA = i+j` and a vector `vecB_(2)` perpendicular to `vecA`. Then `vecB_(1)` =

A

`(3)/(2)(i+j)`

B

`(2)/(3) (i+j)`

C

`(1)/(2) (i+j)`

D

`(1)/(3) (i+j)`

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The correct Answer is:
A
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