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What is the length of projection of vec(...

What is the length of projection of `vec(A)=3hat(i)+4hat(j)+5hat(k)` on `xy` plane ?

A

`5`

B

`3`

C

`5sqrt2`

D

`4`

Text Solution

Verified by Experts

The correct Answer is:
A
Legnth of projection on `xy` plane is `=sqrt(3^(2)+4^(2))=5`
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