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IF vectors vec(A) = hat(i) + 2hat(j) + 4...

IF vectors `vec(A) = hat(i) + 2hat(j) + 4hat(k)` and `vec(B) = 5hat(i)` represent the two sides of a triangle, then the third side of the triangle has length equal to :

A

6

B

`sqrt56`

C

both of the above

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
B
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