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If vec(A) and vec(B) are perpendicula...

If `vec(A) and vec(B)` are perpendicular then `vec(A) . vec(B)=` . . . .

A

`|vec(A)||vec(B)|`

B

`|vec(A)xxvec(B)|`

C

`|vec(A) ||vec(B)|cos180^(@)`

D

`|vec(A) ||vec(B)|cos 90^(@)`

Text Solution

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The correct Answer is:
D
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