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For any vector vec(alpha), what is (vec(...

For any vector `vec(alpha)`, what is `(vec(alpha). hat( i)) hat(i)+(vec(alpha). hat(j)) hat(j)+(vec(alpha). hat(k)) hat(k)` equal to ?

A

0

B

`vec(a)`

C

`2vec(a)`

D

`3vec(a)`

Text Solution

Verified by Experts

The correct Answer is:
B
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