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A unit vector perpendicular to vector ve...

A unit vector perpendicular to vector `vecV=(3,-4)` is

A

`(4,3)`

B

`((3)/(5),(4)/(5))`

C

`(-(3)/(5),-(4)/(5))`

D

`(-(4)/(5),-(3)/(5))`

Text Solution

Verified by Experts

The correct Answer is:
D
All answer choices except Choice A are unit vectors. Backsolve to find that the only one having a zero dot product with `(3,-4)` is `(-(4)/(5),-(3)/(5))`.
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