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Let vec(u),vec(v),vec(w) be such that ve...

Let `vec(u),vec(v),vec(w)` be such that `vec(u)+vec(v)+vec(w)=0.` If `|vec(u)|=3,|vec(v)|=4,|vec(w)|=5,` then `vec(u).vec(v)+vec(v).vec(w)+vec(w).vec(u)=`

A

47

B

25

C

-25

D

-47

Text Solution

Verified by Experts

The correct Answer is:
C
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